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An underground city is a series of linked subterranean spaces that may provide a defensive refuge; a place for living, working or shopping; a transit system;
mausolea A mausoleum is an external free-standing building constructed as a monument enclosing the interment space or burial chamber of a deceased person or people. A mausoleum without the person's remains is called a cenotaph. A mausoleum may be consid ...
; wine or storage cellars;
cisterns A cistern (Middle English ', from Latin ', from ', "box", from Greek ', "basket") is a waterproof receptacle for holding liquids, usually water. Cisterns are often built to catch and store rainwater. Cisterns are distinguished from wells by ...
or drainage channels; or several of these. Underground cities may be currently active modern creations or they may be historic including ancient sites, some of which may be all or partially open to the public. The term may also refer to a network of
tunnel A tunnel is an underground passageway, dug through surrounding soil, earth or rock, and enclosed except for the entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube cons ...
s that connects buildings beneath street level that may house office blocks,
shopping mall A shopping mall (or simply mall) is a North American term for a large indoor shopping center, usually anchored by department stores. The term "mall" originally meant a pedestrian promenade with shops along it (that is, the term was used to refe ...
s,
metro station A metro station or subway station is a station for a rapid transit system, which as a whole is usually called a "metro" or "subway". A station provides a means for passengers to purchase tickets, board trains, and evacuate the system in the ...
s,
theatre Theatre or theater is a collaborative form of performing art that uses live performers, usually actors or actresses, to present the experience of a real or imagined event before a live audience in a specific place, often a stage. The perform ...
s, and other attractions. These passages can usually be accessed through the public space of any of the buildings connecting to them, and sometimes have separate entries as well. This latter definition encompasses many modern structures, whereas the former more generally covers tunnel systems from ancient times to the present day. Underground cities are especially functional in cities with very cold or hot climates, because they permit activities to be comfortably accessible year round without regard to the weather. Underground cities are similar in nature to
skyway A skyway, skybridge, skywalk, or sky walkway is an elevated type of pedway connecting two or more buildings in an urban area, or connecting elevated points within mountainous recreational zones. Urban skyways very often take the form of enclo ...
systems and may include some buildings linked by skyways or above-ground corridors rather than underground. Some cities also have tunnels that have been abandoned.


Argentina

Buenos Aires Buenos Aires ( or ; ), officially the Autonomous City of Buenos Aires ( es, link=no, Ciudad Autónoma de Buenos Aires), is the capital and primate city of Argentina. The city is located on the western shore of the Río de la Plata, on South ...
, capital of
Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...
, has an extensive number of underground cities in its Subte. Most stations have small shops, bars and kiosks, while main hubs interconnect through underground pedestrian walkways with railroad stations, governmental buildings, or shopping centres. Some have additional mall-like mezzanine levels, with the Centro
Obelisk of Buenos Aires The Obelisco de Buenos Aires (Obelisk of Buenos Aires) is a national historic monument and icon of Buenos Aires. Located in the Plaza de la República in the intersection of avenues Corrientes and 9 de Julio, it was erected in 1936 to commemora ...
area (three lines, four underground levels),
Estación Retiro Retiro is the name of a railway station complex in Buenos Aires, Argentina, that includes three main terminal train stations ( Retiro-Mitre, Retiro-Belgrano and Retiro-San Martín) and two terminal subway stations ( Retiro of Line C and Reti ...
, Estación Constitución, Estación Once, and
Federico Lacroze railway station Federico Lacroze railway station (Estación Federico Lacroze in Spanish) is a passenger railway station in Buenos Aires, Argentina. The station is located in the city's outlying '' barrio'' (neighbourhood) of Chacarita in a predominantly reside ...
being the most important ones.


Australia

Sydney has a series of underground shopping malls around the Town Hall underground station. The tunnels run south to the George Street cinema district, west under the town hall, and north to
Pitt Street Mall Pitt Street Mall is the pedestrianised section of Pitt Street in the Sydney central business district, in the Australian state of New South Wales. Running for approximately 200 metres between Market Street and King Street, it is one block lon ...
through the
Queen Victoria Building The Queen Victoria Building (abbreviated as the QVB) is a heritage-listed late-nineteenth-century building designed by the architect George McRae located at 429–481 George Street in the Sydney central business district, in the Australian st ...
. The northern branch links Queen Victoria Building with Galleries Victoria, Sydney Central Plaza (which in turn links underground to
Westfield Sydney Westfield Sydney is a large, upmarket shopping centre in the Sydney central business district. It is located underneath the Sydney Tower and is located on Pitt Street Mall, adjacent to the MidCity, Glasshouse and near The Strand Arcade. Histo ...
and internally above ground to Centrepoint, Imperial Arcade, Skygarden, Glasshouse and 25 Martin Place). The linked centres run for over . In 2005,
Westfield Corporation Westfield Corporation was an Australian commercial real estate company and operator of shopping centres. It was founded with the spin-off of the Westfield Group in 2014, where assets in Australia and New Zealand formed the Scentre Group and ...
submitted a development application to link Sydney Central Plaza underground with 3 other properties on Pitt Street Mall and extend the tunnel network by a further or more.
Perth Perth is the capital and largest city of the Australian state of Western Australia. It is the fourth most populous city in Australia and Oceania, with a population of 2.1 million (80% of the state) living in Greater Perth in 2020. Perth i ...
has a small network of underground shopping malls running from the St Georges Terrace entrance to Trinity Arcade to Murray Street Mall. The small town of
Coober Pedy Coober Pedy () is a town in northern South Australia, north of Adelaide on the Stuart Highway. The town is sometimes referred to as the "opal capital of the world" because of the quantity of precious opals that are mined there. Coober Pedy is ...
in northern
South Australia South Australia (commonly abbreviated as SA) is a state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest of Australia's states and territories ...
has numerous underground residences and other facilities. The area was and is extensively mined for
opal Opal is a hydrated amorphous form of silica (SiO2·''n''H2O); its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Due to its amorphous property, it is classified as a mineraloid, unlike crystalline form ...
, and the settlers lived underground to escape the scorching daytime heat, often exceeding .


Canada

The cold-winter northern continental climate of much of Canada makes underground pedestrian malls particularly useful in many cities. *
Edmonton Edmonton ( ) is the capital city of the Canadian province of Alberta. Edmonton is situated on the North Saskatchewan River and is the centre of the Edmonton Metropolitan Region, which is surrounded by Alberta's central region. The city ancho ...
, Alberta, has a small system of tunnels and above-ground
skyway A skyway, skybridge, skywalk, or sky walkway is an elevated type of pedway connecting two or more buildings in an urban area, or connecting elevated points within mountainous recreational zones. Urban skyways very often take the form of enclo ...
s called the
Pedway Pedways (short for pedestrian walkways) are elevated or underground walkways, often connecting urban high-rises to each other, other buildings, or the street. They provide quick and comfortable movement from building to building, away from traff ...
connecting buildings and LRT stations of the downtown core. * Halifax, Nova Scotia (''
Downtown Halifax Link The Downtown Halifax Link system is a network of climate-controlled pedways (pedestrian tunnels and skywalks) connecting various office buildings, hotels, parkades, and entertainment venues around downtown Halifax, Nova Scotia, Canada. It is simila ...
''), where no point is more than 10 minutes casual walking distance from any other one. *
Montreal Montreal ( ; officially Montréal, ) is the second-most populous city in Canada and most populous city in the Canadian province of Quebec. Founded in 1642 as '' Ville-Marie'', or "City of Mary", it is named after Mount Royal, the triple ...
, Quebec, ''
Underground city An underground city is a series of linked subterranean spaces that may provide a defensive refuge; a place for living, working or shopping; a transit system; mausolea; wine or storage cellars; cisterns or drainage channels; or several of th ...
'', or ''la ville souterraine'' in French, is the largest underground network in the world. Its of tunnel cover more than 41 city blocks (about ). Access through the RÉSO can be made to apartment buildings, hotels, offices, banks, and universities, as well as public spaces like retail shops and malls, concert halls, cinemas, the
Bell Centre Bell Centre (), formerly known as Molson Centre (), is a multi-purpose arena located in Montreal, Quebec, Canada. Opened on March 16, 1996, it is the home arena of the Montreal Canadiens of the National Hockey League (NHL), replacing the Montr ...
hockey arena, museums, seven
metro Metro, short for metropolitan, may refer to: Geography * Metro (city), a city in Indonesia * A metropolitan area, the populated region including and surrounding an urban center Public transport * Rapid transit, a passenger railway in an urb ...
stations, two train stations ( Lucien-L'Allier and Gare Centrale), a
bus terminal A bus station or a bus interchange is a structure where city or intercity buses stop to pick up and drop off passengers. While the term bus depot can also be used to refer to a bus station, it generally refers to a bus garage. A bus station is l ...
(
Réseau de transport de Longueuil Réseau de transport de Longueuil (RTL) ( en, Longueuil Transit Network) is a public transit system in the city of Longueuil, Quebec, Canada, and nearby communities on the South Shore of Montreal. The RTL had an annual ridership of 34,447,686 in ...
and other transit authorities), and other areas. It connects 80% of office space and 35% of commercial space in downtown Montreal. **The network began as a connection between Place Ville Marie, the
Queen Elizabeth Hotel Fairmont The Queen Elizabeth (french: Fairmont Le Reine Élizabeth) is a historic grand hotel in Montreal, Quebec, Canada. With 950 rooms and 21 floors it is the largest hotel in the province of Quebec, and the second largest Fairmont hotel in ...
and the Gare Centrale. **More than 2,000 shops and 40 cinemas line the passageways. Tourists often visit attractions in the underground city, which is used by an average of half a million Montrealers per day. **Eight
metro Metro, short for metropolitan, may refer to: Geography * Metro (city), a city in Indonesia * A metropolitan area, the populated region including and surrounding an urban center Public transport * Rapid transit, a passenger railway in an urb ...
stations link to smaller networks that are not yet part of the central network, such as Berri UQAM in the eastern part of downtown and Pie-IX which links venues from the
1976 Summer Olympics Events January * January 3 – The International Covenant on Economic, Social and Cultural Rights enters into force. * January 5 – The Pol Pot regime proclaims a new constitution for Democratic Kampuchea. * January 11 – The 1976 P ...
. *
Carleton University Carleton University is an English-language public research university in Ottawa, Ontario, Canada. Founded in 1942 as Carleton College, the institution originally operated as a private, non-denominational evening college to serve returning Wo ...
in Ottawa, Ontario, has a
tunnel network In transport, tunnels can be connected together to form a tunnel network. These can be used in mining to reach ore below ground, in cities for underground rapid transit systems, in sewer systems, in warfare to avoid enemy detection or attacks, as ...
which connects ten residence buildings with other buildings on its main campus. The city also has an underground concourse at the
Place de Ville Place de Ville is a complex of office towers in downtown Ottawa, Ontario, Canada. It consists of four office buildings: Place de Ville A, B, and C; and the 'Podium' building, which houses a shuttered "piggy-back" cinema enveloped with function ...
office complex in the downtown business district, connecting 4 office buildings containing over of leasable space, and 2 hotels with 900 rooms combined. There are plans to expand the underground network after the
Confederation Line The Confederation Line (french: Ligne de la Confédération), also called O-Train Line 1 (french: Ligne 1 de l'O-Train), is a light rail line operated by OC Transpo in Ottawa, Ontario, Canada, as part of the city's O-Train light rail system. I ...
, a rapid transit line featuring three downtown subway stations, is completed. It is estimated there will be as many as 20 buildings with direct indoor connections to the downtown subway portion, or 4 million square feet of office space, of retail, 1400 hotel rooms and the
Ottawa Convention Centre The Shaw Centre (formerly the Ottawa Convention Centre) is a convention centre located in the downtown core of Ottawa, Ontario, Canada. It opened in April 2011. The Centre replaces the Ottawa Congress Centre, which opened in 1983 and is built on t ...
. *
Saskatoon Saskatoon () is the largest city in the Canadian province of Saskatchewan. It straddles a bend in the South Saskatchewan River in the central region of the province. It is located along the Trans-Canada Yellowhead Highway, and has served as th ...
, Saskatchewan – On the campus of the
University of Saskatchewan A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States, ...
a tunnel system connects several of the buildings on campus, this is augmented with overhead walkways that further extend the network. * St. John's, Newfoundland and Labrador – At the main campus of Memorial University of Newfoundland are the MUNnels, a tunnel system, in which all the main buildings are connected, though there are also some elevated walkways. *
Toronto Toronto ( ; or ) is the capital city of the Canadian province of Ontario. With a recorded population of 2,794,356 in 2021, it is the most populous city in Canada and the fourth most populous city in North America. The city is the anch ...
, Ontario ("
PATH A path is a route for physical travel – see Trail. Path or PATH may also refer to: Physical paths of different types * Bicycle path * Bridle path, used by people on horseback * Course (navigation), the intended path of a vehicle * Desire p ...
"), comprises of walkways and 1,200 shops. It links many important buildings and attractions downtown to six TTC subway stations. PATH accommodates 100,000 pedestrians daily, and PATH businesses host the world's largest underground sidewalk sale once annually. **The PATH network in Toronto is the largest underground shopping complex in the world with . **Toronto also has a separate, smaller "underground city" connecting several building complexes and two subway stations on
Bloor Street Bloor Street is a major east–west residential and commercial thoroughfare in Toronto, Ontario, Canada. Bloor Street runs from the Prince Edward Viaduct, which spans the Don River Valley, westward into Mississauga where it ends at Central Park ...
. *
Vancouver Vancouver ( ) is a major city in western Canada, located in the Lower Mainland region of British Columbia. As the List of cities in British Columbia, most populous city in the province, the 2021 Canadian census recorded 662,248 people in the ...
, British Columbia, has two
shopping mall A shopping mall (or simply mall) is a North American term for a large indoor shopping center, usually anchored by department stores. The term "mall" originally meant a pedestrian promenade with shops along it (that is, the term was used to refe ...
s,
Pacific Centre Pacific Centre (officially CF Pacific Centre since 2015) is a shopping mall located in Vancouver, British Columbia, Canada. It is owned by Cadillac Fairview, the Ontario Pension Board, and the Workplace Safety and Insurance Board, and is manage ...
and Vancouver Centre, that are interconnected and extend over three city blocks, containing more than 200 stores that weaves above and below ground level. These malls have metro access at Granville SkyTrain Station on the Expo Line and Vancouver City Centre SkyTrain Station on the
Canada Line The Canada Line is a rapid transit line in Metro Vancouver, British Columbia, Canada, that is part of the SkyTrain system. The line is owned by TransLink and InTransitBC and is operated by ProTrans BC. Coloured turquoise on route maps, it op ...
. There are also restricted tunnels and parking garage connections connecting the Pacific Centre structure to Robson Square and the Courthouse building. Other connections exist between SkyTrain stations and surrounding buildings such is the case with the Burrard Station connections to the Bentall Centre and the Royal Centre and Waterfront Station's links with
Canada Place Canada Place is a building situated on the Burrard Inlet in Vancouver, British Columbia, Canada. It is home to the Vancouver Convention Centre, the Pan Pacific Vancouver Hotel, the Vancouver World Trade Centre, and the virtual flight ride Fl ...
and the Sinclair Centre. *
Winnipeg Winnipeg () is the capital and largest city of the province of Manitoba in Canada. It is centred on the confluence of the Red and Assiniboine rivers, near the longitudinal centre of North America. , Winnipeg had a city population of 749, ...
, Manitoba, has a smaller (mainly commercial office) area located underground in the downtown core below
Portage and Main Portage and Main is an intersection in downtown Winnipeg, Manitoba, Canada, located where Portage Avenue (Route 85) and Main Street (Route 52) intersect. The corner is known as the "crossroads of Canada", due to its relative proximity to the l ...
. Several of the downtown office towers have subterranean entrances to the complex allowing employees and visitors to bypass the downtown traffic and avoid the cold winter temperatures Winnipeg regularly experiences. The system links with the
skyway A skyway, skybridge, skywalk, or sky walkway is an elevated type of pedway connecting two or more buildings in an urban area, or connecting elevated points within mountainous recreational zones. Urban skyways very often take the form of enclo ...
system known as the Winnipeg Walkway. Also the
University of Manitoba The University of Manitoba (U of M, UManitoba, or UM) is a Canadian public research university in the province of Manitoba.Charlottetown, Prince Edward Island, has a tiny system. A pedestrian tunnel connects the Confederation Center of the Arts with the Confederation Court Mall. The mall also connects to The Holman Grand Hotel. The Mall is separated into a main section and a much smaller section connected by an overground walkway. This small section of the mall connects to a 338 spot parking garage, which itself connects to the Homburg Financial Building, and has a separate public entry. Apart from the hotel, two additional office buildings are on top and can be assessed through the mall, a building owned by
National Bank In banking, the term national bank carries several meanings: * a bank owned by the state * an ordinary private bank which operates nationally (as opposed to regionally or locally or even internationally) * in the United States, an ordinary p ...
, and a building owned by BDC.


Chile

Santiago Santiago (, ; ), also known as Santiago de Chile, is the capital and largest city of Chile as well as one of the largest cities in the Americas. It is the center of Chile's most densely populated region, the Santiago Metropolitan Region, whos ...
has some elements of an underground city in its "Metro" subway system. While all stations have a small mezzanine level above the tracks for ticket purchase, some key stations have extensive areas of shops and kiosks in addition. Some stations even have an additional mall-like level between the street and the mezzanine levels.


China

*
Beijing } Beijing ( ; ; ), alternatively romanized as Peking ( ), is the capital of the People's Republic of China. It is the center of power and development of the country. Beijing is the world's most populous national capital city, with over 21 ...
built an extensive tunnel network called the
Underground City An underground city is a series of linked subterranean spaces that may provide a defensive refuge; a place for living, working or shopping; a transit system; mausolea; wine or storage cellars; cisterns or drainage channels; or several of th ...
( zh, t=地下城, s=地下城, p=Dìxià Chéng) during the Sino-Soviet conflict, supposedly covering 85 km2, falling into disuse in the 1970s. It was opened in 2000 to the public and tourists, but closed in 2008 for renovations. , all "official" remaining entrances appear to be closed. *
Guangzhou Guangzhou (, ; ; or ; ), also known as Canton () and alternatively romanized as Kwongchow or Kwangchow, is the capital and largest city of Guangdong province in southern China. Located on the Pearl River about north-northwest of Hong Kon ...
has at least 16 different underground networks. **The largest underground network being the one in Zhujiang New Town connecting the commercial basements of over 35 office towers and malls surrounding the Zhujiang New Town Central Park and extends to Zhujiang New Town, Guangzhou Women and Children's Medical Center, Huangpu Dadao and Huacheng Dadao metro stations. The mall portion under the Zhujiang New Town Central Park alone totals at least of commercial space. **In addition there are large subterranean retail tunnels that surround several
Guangzhou Metro The Guangzhou Metro () ( and ) is the rapid transit system of the city of Guangzhou in Guangdong Province of China. It is operated by the state-owned Guangzhou Metro Corporation and was the fourth metro system to be built in mainland China, af ...
stations such as Tiyu Xilu,
Tianhe Sports Center Tianhe Stadium () is a multi-purpose stadium in Tianhe District, Guangzhou, Guangdong, China. It is currently used for football matches. History Construction of the stadium began on 4 July 1984 at the former site of Guangzhou Tianhe Airport. ...
, Martyrs' Park,
Guangzhou railway station Guangzhou railway station serves the city of Guangzhou. It sits on the high speed Guangshen railway just west of Guangzhou East. CRH trains from Guangzhou serves Shenzhen six times daily. Services from this station include trains to Beijing ( ...
and
Guangzhou East railway station Guangzhoudong (Guangzhou East) railway station (), formerly known as Tianhe railway station () serves the city of Guangzhou, located in the city's Tianhe District. The railway, metro, and bus terminal stations is interconnected as a single stat ...
. **Smaller networks of subterranean retail tunnels surround several
Guangzhou Metro The Guangzhou Metro () ( and ) is the rapid transit system of the city of Guangzhou in Guangdong Province of China. It is operated by the state-owned Guangzhou Metro Corporation and was the fourth metro system to be built in mainland China, af ...
stations such as Chen Clan Academy, Jiangnan West (江南新地商业街), Gongyuanqian * Harbin has a number of large, multi-level underground shopping areas, originally built for air defense. The largest is at the roundabout intersection of Xida Zhi street and Hongjun street where three levels of markets following streets from four directions meet under the giant snowflake atrium. *
Hangzhou Hangzhou ( or , ; , , Standard Mandarin pronunciation: ), also romanized as Hangchow, is the capital and most populous city of Zhejiang, China. It is located in the northwestern part of the province, sitting at the head of Hangzhou Bay, whic ...
has an underground mall in
Wulin Square Wulin Square () is a square in the Xiacheng District of Hangzhou. It is served by the Wulin Square Station of the Hangzhou Metro The Hangzhou Metro () is a rapid transit system that serves Hangzhou in Zhejiang province, China. The system ope ...
connected to a subway station of the same name and nearby office buildings. *
Nanjing Nanjing (; , Mandarin pronunciation: ), alternately romanized as Nanking, is the capital of Jiangsu province of the People's Republic of China. It is a sub-provincial city, a megacity, and the second largest city in the East China region. T ...
has an underground mall around Xinjiekou metro station. * Qingdao has two small underground shopping areas, one at the head of the Zhanqiao (pier) and one west of the Qingdao guest house. *
Shanghai Shanghai (; , , Standard Mandarin pronunciation: ) is one of the four direct-administered municipalities of the People's Republic of China (PRC). The city is located on the southern estuary of the Yangtze River, with the Huangpu River flowin ...
has a few underground networks, most notably at People's Square metro station, wherein the line 2 station has a second mezzanine full of shops and Line 1 is connected to a large underground shopping gallery at its south end. Shanghai Science Museum stop on line 2 has a large underground shopping area, known for its imitation goods. Huangpi Road South and Xujiahui stations are directly connected to shopping centers, and the Lujiazui station is connected to the Bank of China tower. *
Shenzhen Shenzhen (; ; ; ), also historically known as Sham Chun, is a major sub-provincial city and one of the special economic zones of China. The city is located on the east bank of the Pearl River estuary on the central coast of southern province ...
has quite a few underground shopping malls: **Link City ( zh, t=連城新天地, s=连城新天地), an underground shopping plaza connecting
Convention and Exhibition Center Convention may refer to: * Convention (norm), a custom or tradition, a standard of presentation or conduct ** Treaty, an agreement in international law * Convention (meeting), meeting of a (usually large) group of individuals and/or companies in a ...
, Shopping Park,
Futian Futian District () is one of the nine districts comprising the city of Shenzhen, China. The district is home to the government and Municipal Committee of Shenzhen, as well as the city's central business district (CBD). Name There are two theor ...
and Gangxia stations with surrounding office buildings. The initial sections of the mall used to be an air-raid shelter. It is currently being expanded to
Gangxia North station Gangxia North station () is an interchange station for Line 2, Line 10, Line 11 and Line 14 of the Shenzhen Metro The Shenzhen Metro () is the rapid transit system for the city of Shenzhen in Guangdong province, China. Extensions opened on ...
. **An underground electronics market connecting Huaqiang Road, Huaqiang North and Huaxin stations and the surrounding
Huaqiangbei Huaqiangbei () is a subdistrict of Futian, Shenzhen, Guangdong Province, China, one of Shenzhen's notable retail areas, having one of the largest electronics markets in the world. The area's status as a major electronics manufacturing hub, and spr ...
electronics markets. **Smaller networks of subterranean retail tunnels surround several
Shenzhen Metro The Shenzhen Metro () is the rapid transit system for the city of Shenzhen in Guangdong province, China. Extensions opened on 28 November 2022 put the network at of trackage, operating on 15 lines with 345 stations. Shenzhen Metro is the 6th ...
stations such as Chegongmiao, Laojie,
Science Museum A science museum is a museum devoted primarily to science. Older science museums tended to concentrate on static displays of objects related to natural history, paleontology, geology, industry and industrial machinery, etc. Modern trends in ...
,
Luohu Luohu District is a district of Shenzhen, China, located north of the New Territories of Hong Kong, east of Futian District, southeast of Longgang District, southwest of Pingshan District, and west of Yantian District. It is one of the oldest ...
, Huangbeiling, and
Window of the World Window of the World () is a theme park located in the western part of the city of Shenzhen in the People's Republic of China. It has about 130 reproductions of some of the most famous tourist attractions in the world squeezed into 48 hectares ...
. *
Wuhan Wuhan (, ; ; ) is the capital of Hubei Province in the People's Republic of China. It is the largest city in Hubei and the most populous city in Central China, with a population of over eleven million, the ninth-most populous Chinese city an ...
has a number of subterranean retail tunnels surrounding
Wuhan Metro Wuhan Metro is a rapid transit system serving the city of Wuhan, Hubei, China. Owned and operated by Wuhan Metro Group Co., Ltd., the network now includes 11 lines, 282 stations, and of route length. With 1.22 billion annual passengers in 2019, W ...
stations such as
Zhongshan Park Zhongshan Park () is a common name for Chinese parks, in honour of Sun Yat-sen, better-known in Chinese as Sun Zhongshan, who is considered by many to be the " Father of modern China". Currently there are more than 40 Zhongshan Parks in China, and ...
, Wuhan Business District,
Wangjiawan Wangjiawan () is a village in the municipality of Fenxiang Town () and part of the Yiling District (), which itself is a part of the Yichang () of Hubei Hubei (; ; alternately Hupeh) is a landlocked province of the People's Republic ...
, Qushuilou, Xudong, Wangjiadun, Hongshan Square and Changgang Road Stations.


Finland

*In
Helsinki Helsinki ( or ; ; sv, Helsingfors, ) is the capital, primate, and most populous city of Finland. Located on the shore of the Gulf of Finland, it is the seat of the region of Uusimaa in southern Finland, and has a population of . The city ...
centre, underground shopping areas cover the central railway station area including the underground shopping centre Asematunneli, and two subway stations, Rautatientori and Kamppi. The Kamppi metro station is integrated with the
Kamppi Center Kamppi Centre ( fi, Kampin keskus, sv, Kampens centrum) is a complex in the Kamppi district in the centre of Helsinki, Finland, designed by various architects, the main designer, however, being Juhani Pallasmaa. It is said to be Helsinki's new ...
() long-distance bus terminal, freight depot and internal parking area, all underground. It features a six-storey shopping complex and a central bus terminal for local buses. Together with these, the Forum shopping centre,
Sokos Sokos is a chain of department stores in Finland that is part of the S Group, which also operates the hotel chain, Sokos Hotels. Department stores * Helsinki (centre) * Helsinki ( Kaari) * Hämeenlinna * Joensuu * Jyväskylä * Kajaani * Ko ...
and Stockmann department stores are all connected together with underground walkways featuring shops and other services. *Three other subway stations in Helsinki have similar, smaller undergrounds:
Hakaniemi Hakaniemi (; sv, Hagnäs) is an unofficial district of Helsinki, the Finnish capital. It covers most of the neighbourhood of Siltasaari in the district of Kallio. Hakaniemi is located at the sea shore and is separated from the city centre by the ...
,
Sörnäinen Sörnäinen ( sv, Sörnäs; ''Sörkkä'' or ''Sörkka'' in Helsinki slang) is a neighbourhood in the city of Helsinki, Finland. Sörnäinen is located a little more than one kilometre north from the coastal centre of Helsinki, near the district ...
and
University of Helsinki The University of Helsinki ( fi, Helsingin yliopisto, sv, Helsingfors universitet, abbreviated UH) is a public research university located in Helsinki, Finland since 1829, but founded in the city of Turku (in Swedish ''Åbo'') in 1640 as the ...
. *The master plan of Helsinki's large underground city complex is known to be the only one of its kind in the world.


France

*
Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), ma ...
: **The
mines of Paris The mines of Paris (french: carrières de Paris – "quarries of Paris") comprise a number of abandoned, subterranean mines under Paris, France, connected together by galleries. Three main networks exist; the largest, known as the ("large south ...
are several disconnected networks of more than of mining tunnels started in the 13th century and dominated by the "large south network" on the
Left Bank In geography, a bank is the land alongside a body of water. Different structures are referred to as ''banks'' in different fields of geography, as follows. In limnology (the study of inland waters), a stream bank or river bank is the terra ...
, of which was repurposed from 1786 as the
Catacombs of Paris The Catacombs of Paris (french: Catacombes de Paris, ) are underground ossuaries in Paris, France, which hold the remains of more than six million people in a small part of a tunnel network built to consolidate Paris's ancient stone quarries. E ...
ossuary, the final resting place of 6-7 million Parisians. Other parts of the tunnel network have long been closed off for safety reasons, but the tunnels have served as safe passageways during war and revolution, routes for
urban explorer Urban exploration (often shortened as UE, urbex and sometimes known as roof and tunnel hacking) is the exploration of manmade structures, usually abandoned ruins or hidden components of the manmade environment. Photography and historical inte ...
s, and venues for unauthorized cultural activities. ** La Défense, the major business district northwest of the city center built in the 1960s, has an extensive network of commercial passageways under a vast plaza centered on the
Gare de La Défense Gare is the word for "station" in French and related languages, commonly meaning railway station Gare can refer to: People * Gare (surname), surname * The Gare Family, fictional characters in the novel '' Wild Geese'' by Martha Ostenso Places * ...
and radiating out to connect with surrounding buildings, notably the large
Les Quatre Temps The Westfield Les 4 Temps is the main shopping center in the business district of La Défense, in the western suburbs of Paris, on the territory of the commune of Puteaux in the Hauts-de-Seine. In 2019, ''Les Quatre Temps'' is the most visited sh ...
shopping center and CNIT, but enabling access to many buildings of the district. **The Forum des Halles is a partially underground multilevel commercial and shopping center connected to the massive underground transit hub Chatelet-Les-Halles. Opened in 1979, passageways extend west under the
Jardin Nelson Mandela Jardin may refer to: Places *Jardin, Isère, a village in Isère, France *Le Jardin, a village in Corrèze, France *Jardin, Colombia, a town in Antioquia Family name *Alexandre Jardin (born 1965), French writer and film director *Frédéric Jardi ...
for several city blocks, and within the fare zone of the
Paris Metro Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. Si ...
, stretch half a kilometer south to the banks of the
River Seine ) , mouth_location = Le Havre/Honfleur , mouth_coordinates = , mouth_elevation = , progression = , river_system = Seine basin , basin_size = , tributaries_left = Yonne, Loing, Eure, Risle , tributarie ...
. *
Naours Naours is a commune in the Somme department in Hauts-de-France in northern France. Geography Naours is situated on the D117 and D60 crossroads, some north of Amiens. Population See also *Communes of the Somme department The following is ...
: below the Picardy village of Naours (between Doullens and Amiens), the 28 galleries ( long) of an ancient limestone quarry (exploited since the 3rd century c.e.) have long been used as shelter by the population seeking refuge from invaders. Occupied by the
Triple Entente The Triple Entente (from French '' entente'' meaning "friendship, understanding, agreement") describes the informal understanding between the Russian Empire, the French Third Republic, and the United Kingdom of Great Britain and Ireland as well a ...
forces during
WWI World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
, and then used as headquarters by the German Army during the
WWII World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
occupation of France, the galleries are now open to visitors. * Arras: During
World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
, the French and British Army built a tunnel system (''boves'') based upon the already existing
adit An adit (from Latin ''aditus'', entrance) is an entrance to an underground mine which is horizontal or nearly horizontal, by which the mine can be entered, drained of water, ventilated, and minerals extracted at the lowest convenient level. Adit ...
s from a formerly used
quarry A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to reduce their envir ...
. Scots and Englishmen used the quarry below the quarter Saint-Sauveur and called it "Glasgow", "Manchester" and "Liverpool". The New Zealand Army (bonded with the British Army) used the quarry for constructing another tunnel system below the quarter Ronville and called it "Wellington", "Auckland" and "Nelson". Soldiers from these armed forces hid in the tunnels for several days. On April 9, 1917, 5:30 am, 24,000 soldiers sortied from there to encounter German troops.


Germany

*
Berlin Berlin ( , ) is the capital and List of cities in Germany by population, largest city of Germany by both area and population. Its 3.7 million inhabitants make it the European Union's List of cities in the European Union by population within ci ...
: Several buildings on the east side of Friedrichstraße, from Quartier 205 (Friedrichstraße 70) northwards up to Galerie Lafayette are connected to each other. Businesses are on both sides of the underground street so that it appears to be inside a building all the time, even when it crosses Taubenstraße underground. :Extensive underground bunkers still exist all throughout the city centre, although they are largely sealed off and closed to the public. :All of the buildings at the large Charité Virchow campus are connected via a system of spacious tunnels. In addition to employee use, particularly during inclement weather, there is also a rudimentary robotic system via which mail and packages are delivered across campus. *
Frankfurt am Main Frankfurt, officially Frankfurt am Main (; Hessian: , "Frank ford on the Main"), is the most populous city in the German state of Hesse. Its 791,000 inhabitants as of 2022 make it the fifth-most populous city in Germany. Located on its na ...
: Underground shopping malls, called 'B-Ebene' in Frankfurt, of considerable size are found at Hauptbahnhof (central station) and Hauptwache. *
Hamburg (male), (female) en, Hamburger(s), Hamburgian(s) , timezone1 = Central (CET) , utc_offset1 = +1 , timezone1_DST = Central (CEST) , utc_offset1_DST = +2 , postal ...
: The
Jungfernstieg The Jungfernstieg () is an urban promenade in Hamburg, Germany. It is the city's foremost boulevard. Location Jungfernstieg mostly lies within the quarter of Neustadt; however at its easternmost it stretches as far as Hamburg-Altstadt. In to ...
and Rathaus subway stations and several entrances are connected by pedestrian tunnels, some of them contain shops. There is a direct access to the Europapassage shopping mall. *
Munich Munich ( ; german: München ; bar, Minga ) is the capital and most populous city of the German state of Bavaria. With a population of 1,558,395 inhabitants as of 31 July 2020, it is the third-largest city in Germany, after Berlin and Ha ...
: Underground shopping mall at Karlsplatz/Stachus. This combines the underpass that leads to the pedestrian area and the entry to the subway system. * Stuttgart: There is a large underground shopping mall (Klettpassage) connecting the Hauptbahnhof (central station) with the main shopping street, the Königstraße.


Greece

In
Thessaloniki Thessaloniki (; el, Θεσσαλονίκη, , also known as Thessalonica (), Saloniki, or Salonica (), is the second-largest city in Greece, with over one million inhabitants in its metropolitan area, and the capital of the geographic region of ...
,
Hellenistic In Classical antiquity, the Hellenistic period covers the time in Mediterranean history after Classical Greece, between the death of Alexander the Great in 323 BC and the emergence of the Roman Empire, as signified by the Battle of Actium in ...
,
Roman Roman or Romans most often refers to: *Rome, the capital city of Italy *Ancient Rome, Roman civilization from 8th century BC to 5th century AD *Roman people, the people of ancient Rome *'' Epistle to the Romans'', shortened to ''Romans'', a lette ...
,
Byzantine The Byzantine Empire, also referred to as the Eastern Roman Empire or Byzantium, was the continuation of the Roman Empire primarily in its eastern provinces during Late Antiquity and the Middle Ages, when its capital city was Constantinopl ...
, and Ottoman monuments coexist underground and several of these have been discovered and emerged. Monuments such as the Catacombs of St. John and the underground museum of the Agora have limited access and many are not permitted to enter even to the locals by the Archaeological Department of the Thessaloniki underground
Metro Metro, short for metropolitan, may refer to: Geography * Metro (city), a city in Indonesia * A metropolitan area, the populated region including and surrounding an urban center Public transport * Rapid transit, a passenger railway in an urb ...
project.


Hong Kong

Many MTR stations in Hong Kong form extended underground networks connecting to
building A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and fu ...
s and at the basement of some major
shopping malls A shopping mall (or simply mall) is a North American term for a large indoor shopping center, usually anchored by department stores. The term "mall" originally meant a pedestrian promenade with shops along it (that is, the term was used to refe ...
in the area above. The stations themselves house a number of retail shops. Notable examples are the Central
Hong Kong Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China (abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delta i ...
stations and the
Tsim Sha Tsui Tsim Sha Tsui, often abbreviated as TST, is an urban area in southern Kowloon, Hong Kong. The area is administratively part of the Yau Tsim Mong District. Tsim Sha Tsui East is a piece of land reclaimed from the Hung Hom Bay now east of Tsi ...
East Tsim Sha Tsui stations. Only rarely are there not any shops. Additional underground networks have been proposed for
Causeway Bay Causeway Bay is an area and a bay on Hong Kong Island, Hong Kong, straddling the border of the Eastern and the Wan Chai districts. It is a major shopping, leisure and cultural centre in Hong Kong, with a number of major shopping centres. Th ...
in 2006 and in Kwun Tong under Hoi Yuen Road in 2010. , studies are underway for underground networks in
Tsim Sha Tsui Tsim Sha Tsui, often abbreviated as TST, is an urban area in southern Kowloon, Hong Kong. The area is administratively part of the Yau Tsim Mong District. Tsim Sha Tsui East is a piece of land reclaimed from the Hung Hom Bay now east of Tsi ...
,
Kowloon Park Kowloon Park is a large public park in Tsim Sha Tsui, Kowloon, Hong Kong. It has an area of and is managed by the Leisure and Cultural Services Department.Leisure and Cultural Services DepartmentKowloon Park: Historical Background History ...
,
Victoria Park Victoria Park may refer to: Places Australia * Victoria Park Nature Reserve, a protected area in Northern Rivers region, New South Wales * Victoria Park, Adelaide, a park and racecourse * Victoria Park, Brisbane, a public park and former golf ...
,
Causeway Bay Causeway Bay is an area and a bay on Hong Kong Island, Hong Kong, straddling the border of the Eastern and the Wan Chai districts. It is a major shopping, leisure and cultural centre in Hong Kong, with a number of major shopping centres. Th ...
, Happy Valley,
Admiralty Admiralty most often refers to: *Admiralty, Hong Kong *Admiralty (United Kingdom), military department in command of the Royal Navy from 1707 to 1964 *The rank of admiral *Admiralty law Admiralty can also refer to: Buildings * Admiralty, Traf ...
,
Wan Chai Wan Chai is situated at the western part of the Wan Chai District on the northern shore of Hong Kong Island, in Hong Kong. Its other boundaries are Canal Road to the east, Arsenal Street to the west and Bowen Road to the south. The area n ...
and
Hong Kong Park The Hong Kong Park is a public park next to Cotton Tree Drive in Central, Hong Kong. Built at a cost of HK$398 million and opened on 23 May 1991, it covers an area of and is an example of modern design and facilities blending with ...
. In 2017, The Development Bureau announced that two underground streets will be constructed, which would connect
San Po Kong San Po Kong () is an area in New Kowloon in Hong Kong. It is largely industrial and partly residential. Administratively, it belongs to Wong Tai Sin District. Location San Po Kong is located south of Wong Tai Sin and Diamond Hill, north of th ...
, Kai Tak station and
Sung Wong Toi station Sung Wong Toi is an underground MTR rapid transit station in Hong Kong on the , located in Ma Tau Chung in Kowloon City District. The station also serves Kowloon City and Ma Tau Wai via a pedestrian tunnel. The station was built as part of ...
.


Iran

Historical underground cities of Persia include Samen,
Nushabad , native_name_lang = fa , settlement_type = City , image_skyline = Underground City of Nooshabad 01.jpg , imagesize = , image_alt = , image_caption = Entrance to the underground ...
, and Kariz. *
Kish Kish may refer to: Geography * Gishi, Nagorno-Karabakh, Azerbaijan, a village also called Kish * Kiş, Shaki, Azerbaijan, a village and municipality also spelled Kish * Kish Island, an Iranian island and a city in the Persian Gulf * Kish, Iran, ...
: An underground city by the name of Hidden Pearl was constructed of roads interlinked 20 meters (66 ft.) under the ground. Shops and restaurants are planned to be built. *
Tehran Tehran (; fa, تهران ) is the largest city in Tehran Province and the capital of Iran. With a population of around 9 million in the city and around 16 million in the larger metropolitan area of Greater Tehran, Tehran is the most popul ...
: Tehran has made a series of underground pathways in and around Vali-e Asr Metro Station and is in planning stage to increase commercial activity in newly built buildings in the central part of the city. The priorities for future development are expansion of underground connections around Haft-e Tir Metro Station and Meydan-e Vali-e Asr Metro Station. * Isfahan: With the completion of Imam Hosein Metro Station, and Jahan Nama Complex, and their eventual underground connection, there would be an underground complex of a length of 300 m formed in Isfahan downtown area. Also, not underground per se, with Imam Ali Square's street network being dug underground and a large open space plaza being constructed on the top, the plaza is connected through a series of covered bazaar pathways of a length exceeding 4 km, connecting it to Naqsh-e Jahan Square. *
Nushabad , native_name_lang = fa , settlement_type = City , image_skyline = Underground City of Nooshabad 01.jpg , imagesize = , image_alt = , image_caption = Entrance to the underground ...
: Nushabad has an underground city that served as a refuge during wars.


Italy

*
Ancient Rome In modern historiography, ancient Rome refers to Roman civilisation from the founding of the city of Rome in the 8th century BC to the collapse of the Western Roman Empire in the 5th century AD. It encompasses the Roman Kingdom (753–509 BC ...
had a network of catacombs, ancient Jewish and Christian underground burial places near the city. *
Naples Naples (; it, Napoli ; nap, Napule ), from grc, Νεάπολις, Neápolis, lit=new city. is the regional capital of Campania and the third-largest city of Italy, after Rome and Milan, with a population of 909,048 within the city's adminis ...
has many chambers and tunnels beneath the city, including channels and reservoirs for water, and catacombs.


Japan

*
Osaka is a designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the third most populous city in Japan, following Special wards of Tokyo and Yokohama. With a population of ...
has enormous underground networks in the
Umeda is a major commercial, business, shopping and entertainment district in Kita-ku, Osaka, Japan, and the city's main northern railway terminus (Ōsaka Station, Umeda Station). The district's name means "plum field". History Umeda was historica ...
, Namba, and
Shinsaibashi is a district in the Chūō-ku ward of Osaka, Japan and the city's main shopping area. At its center is , a covered shopping street, that is north of Dōtonbori and Sōemonchō, and parallel and east of Mido-suji street. Associated with Shin ...
districts, in which Umeda alone includes over 1,200 retail stores and restaurants, as well as subway and intercity rail stations. *
Tokyo Tokyo (; ja, 東京, , ), officially the Tokyo Metropolis ( ja, 東京都, label=none, ), is the capital and List of cities in Japan, largest city of Japan. Formerly known as Edo, its metropolitan area () is the most populous in the world, ...
has numerous networks of connecting passages surrounding subway stations that span a few blocks for commuters. Stations such as Shinjuku and
Shibuya Shibuya (wikt:渋谷, 渋谷wikt:区, 区 ''Shibuya-ku'') is a Special wards of Tokyo, special ward in Tokyo, Japan. As a major commercial and finance center, it houses two of the busiest railway stations in the world, Shinjuku Station (southern ...
have underground shopping malls. Shinjuku in particular has a reputation for being so large and complex that even local Japanese get lost there. The top five largest underground "cities" (地下街, ''chikagai'') in Japan are all shopping districts: ** Crysta Nagahori in Chūō-ku, Osaka – **
Yaesu Chikagai Yaesu Chikagai or Yaesu Shopping Mall is a large underground shopping mall located in Yaesu, Chūō, Tokyo, Japan. Yaesu Chikagai lies underneath Yaesu Avenue and Sotobori Dori. It is immediately adjacent to the Yaesu side of Tokyo Station, wi ...
in Chūō, Tokyo – ** Kawasaki Azalea in
Kawasaki-ku, Kawasaki is one of the seven wards of the city of Kawasaki in Kanagawa Prefecture, Japan. , the ward had an estimated population of 216,826 and a density of 5,530 persons per km2. The total area was . Kawasaki-ku has the home to the second largest Kore ...
– ** Central Park Chikagai in Naka-ku, Nagoya – **Diamor Osaka in Kita-ku, Osaka


Jordan

Jordan Jordan ( ar, الأردن; tr. ' ), officially the Hashemite Kingdom of Jordan,; tr. ' is a country in Western Asia. It is situated at the crossroads of Asia, Africa, and Europe, within the Levant region, on the East Bank of the Jordan Rive ...
boasts the city of Petra—"rose-red city, half as old as time"—carved from the living rock.


Mexico

Guanajuato city was built over old silver mines, some of which are used as roads. The Mexico DF metro system has many underground pedestrian walkways connecting stations.


Netherlands

In general, many large railway stations house underground hallways featuring shops, restaurants, banks and money exchange offices. A striking example of such stations would be the main hallway of the Amsterdam central station, which connects to the city's
metro system Rapid transit or mass rapid transit (MRT), also known as heavy rail or metro, is a type of high-capacity public transport generally found in urban areas. A rapid transit system that primarily or traditionally runs below the surface may be c ...
, although due to renovation and re-building it was temporarily (2012–2015) not possible to walk from the subway to the train station without going outside. *
Maastricht Maastricht ( , , ; li, Mestreech ; french: Maestricht ; es, Mastrique ) is a city and a municipality in the southeastern Netherlands. It is the capital and largest city of the province of Limburg. Maastricht is located on both sides of the ...
: Originally a casemate, the ''kazematten'' of Maastricht form a long network of tunnels underneath the western part of the city. This tunnel network has mainly been used for military purposes. The main construction period of these tunnels lasted from 1575 to 1825. The newest sections of the tunnel network were dug as late as the middle 20th century, built in the Cold War as a shelter for citizens in the event of a nuclear strike on the city. *
Caves of Maastricht The Caves of Maastricht, also known as the caves of Mount Saint PeterBender, Marvin "A DUTCH TREAT" The New York Times Nov 8 1981 https://www.nytimes.com/1981/11/08/travel/a-dutch-treat.html or the Maastricht Underground, are a collection of limest ...
are a far more extensive, system of tunnels with a length over and 20,000 individual corridors lies just west of Maastricht; ( nl, Grotten van Maastricht). These man-made 'caves' were used as Marl quarries from the 13th century onwards. In
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...
, these caves were used to hide large quantities of paintings from the Germans, even including the Nachtwacht. In 1944, construction started on a large public shelter that could have housed 45,000 persons in these caves. The project never saw its completion due to the liberation of Maastricht in the fall of the same year.


Poland

*
Warsaw Warsaw ( pl, Warszawa, ), officially the Capital City of Warsaw,, abbreviation: ''m.st. Warszawa'' is the capital and largest city of Poland. The metropolis stands on the River Vistula in east-central Poland, and its population is officia ...
:
Warszawa Centralna railway station Warszawa Centralna, in English known as Warsaw Central Station, is the primary railway station in Warsaw, Poland. Completed in 1975, the station is located on the Warsaw Cross-City Line and features four underground island platforms with eight tr ...
is connected by pedestrian tunnels to adjacent rail stations Warszawa Śródmieście and Warszawa WKD, Złote Tarasy shopping center, and the Centrum LIM skyscraper.


Russia

*
Moscow Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 millio ...
: "Okhotnyi Ryad" (Охотный Ряд) four-level underground shopping mall () linked to
Metro Metro, short for metropolitan, may refer to: Geography * Metro (city), a city in Indonesia * A metropolitan area, the populated region including and surrounding an urban center Public transport * Rapid transit, a passenger railway in an urb ...
station of same name. * Moscow Metro 2 is a purported secret underground metro system in
Moscow Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 millio ...
built supposedly during (or from) the time of
Joseph Stalin Joseph Vissarionovich Stalin (born Ioseb Besarionis dze Jughashvili; – 5 March 1953) was a Georgian revolutionary and Soviet political leader who led the Soviet Union from 1924 until his death in 1953. He held power as General Secretar ...
.


Singapore

*Extensive underground networks exist around most major stations of the Mass Rapid Transit, such as the one at the
Raffles Place MRT station Raffles Place MRT station is an underground Mass Rapid Transit (MRT) interchange station on the North South Line (NSL) and East West Line (EWL) in Singapore. Located in the Downtown Core, the station is underneath Raffles Place, the centre o ...
with direct underground connections to 19 buildings in the busy
Raffles Place Raffles Place is the centre of the Financial District of Singapore and is located south of the mouth of the Singapore River. It was first planned and developed in the 1820s as Commercial Square to serve as the hub of the commercial zone of Sing ...
area. Expanding the network is the first phase of a new subterranean network linking the station to the
One Raffles Quay One Raffles Quay () is an office building complex located at Raffles Place, the central business district of Singapore. Designed by Kohn Pedersen Fox, One Raffles Quay (ORQ) consists of the 50-storey North Tower and the 29-storey South Tower, to ...
and
Marina Bay Financial Centre The Marina Bay Financial Centre (MBFC) is a mixed-use development located along Marina Boulevard and Central Boulevard at the Downtown Core of Singapore. It consists of three office towers, two residential towers and retail space at Marina Bay ...
for a complex underground pedestrian network across the entire downtown area. *The
CityLink Mall CityLink Mall () is Singapore's first underground mall, located within the One Raffles Link development at Marina Square. Opened on 1 July 2000, the underground mall connects City Hall and Esplanade on the Mass Rapid Transit, and to Suntec ...
offers over of underground retail space and connects the
City Hall MRT station City Hall MRT station is an underground Mass Rapid Transit (MRT) interchange station on the North South Line (NSL) and East West Line (EWL). Situated in the Downtown Core district of Singapore, it is underneath Stamford Road near the road ...
with
Suntec City Suntec City is a major mixed-use development located in Marina Centre, a subzone of the Downtown Core in Singapore, which combines a shopping mall, office buildings, and a convention centre. Construction began on 18 January 1992 and was comp ...
, the
Esplanade - Theatres on the Bay An esplanade or promenade is a long, open, level area, usually next to a river or large body of water, where people may walk. The historical definition of ''esplanade'' was a large, open, level area outside fortress or city walls to provide cle ...
, and other developments in the
Marina Centre Marina Central or Marina Centre (Chinese: 滨海中心; ms, Marina Pusat) is a zone of reclaimed land within the Downtown Core in the southern part of Singapore. Together with the Marina South area, it encloses the sheltered Marina Bay. Sun ...
area. It is also linked to the
Esplanade MRT station Esplanade MRT station is an underground Mass Rapid Transit (MRT) station on the Circle line (CCL). Situated in Downtown Core, Singapore, it is at the junction of Bras Basah Road, Raffles Boulevard and Nicoll Highway. As the name suggests, t ...
on the Circle MRT line. *The
Orchard Road Orchard Road, often known colloquially as simply Orchard, is a major –long road in the Central Area of Singapore. Known as a famous tourist attraction, it is an upscale shopping area of Singapore, with numerous internationally renowned depa ...
shopping belt is connected by underground linkways often with commercial space, particularly around the three MRT stations serving the district, namely
Orchard An orchard is an intentional plantation of trees or shrubs that is maintained for food production. Orchards comprise fruit- or nut-producing trees which are generally grown for commercial production. Orchards are also sometimes a feature of ...
,
Somerset ( en, All The People of Somerset) , locator_map = , coordinates = , region = South West England , established_date = Ancient , established_by = , preceded_by = , origin = , lord_lieutenant_office =Lord Lieutenant of Somerset , lord_ ...
and
Dhoby Ghaut Dhoby Ghaut () is a place in Singapore that often refers to the Dhoby Ghaut MRT station, a major interchange station on Singapore's Mass Rapid Transit network connecting the North-South Line, North East Line, and the Circle Line. As a place, ...
. Plans are also in place to link towards Bras Basah Road into
Suntec City Suntec City is a major mixed-use development located in Marina Centre, a subzone of the Downtown Core in Singapore, which combines a shopping mall, office buildings, and a convention centre. Construction began on 18 January 1992 and was comp ...
,
Bugis Junction Bugis Junction, formerly known as Parco Bugis Junction is an integrated development located at Victoria Street, Middle Road and North Bridge Road in Bugis, Downtown Core in Singapore. The development consists of a shopping mall, an office towe ...
and Chinatown.


South Korea

*Seoul has a well-developed underground network. Myeongdong and Hoehyeon underground streets are the most famous; they are connected to Hoehyeon Station and Myeongdong Station *It is planned to build a larger underground city in Gangnamdaero, the border between
Gangnam District Gangnam District ( ; , ) is one of the 25 local government districts which make up the city of Seoul, South Korea. Gangnam translates to "South of the ( Han) River". Gangnam District is the third largest district in Seoul, with an area of . ...
and
Seocho District Seocho District () is one of the 25 '' gu'' (local government districts) which make up the city of Seoul, South Korea. Seocho is generally referred to as a part of Greater Gangnam Area, along with Gangnam District. As of 2022, Seocho District ra ...
.


Spain

*In
Barcelona Barcelona ( , , ) is a city on the coast of northeastern Spain. It is the capital and largest city of the autonomous community of Catalonia, as well as the second most populous municipality of Spain. With a population of 1.6 million within ci ...
, there is an abandoned underground mall near Plaça de Catalunya called
Avinguda de la Llum Avinguda de la Llum (Catalan for ''Avenue of Light''; Spanish: Avenida de la Luz) is a now-closed underground mall in Barcelona, the first one of its kind to open in Europe, open between 1940 and 1990, on a 2000 square-metre site built in 1929 and ...
, closed since 1990, which had originally been part of a more ambitious project to build an underground city under the centre of Barcelona. Also, some
Metro Metro, short for metropolitan, may refer to: Geography * Metro (city), a city in Indonesia * A metropolitan area, the populated region including and surrounding an urban center Public transport * Rapid transit, a passenger railway in an urb ...
stations or connecting lines in the same station are connected by underground passages over a block in length. *Legend has that the many caves and tunnels in Subterranean Toledo under the old part of Toledo were connected and were used by occultists.


Sweden

*By walking through Stockholm subway stations and indoor shopping malls it is possible to walk indoor through the central business district, partly underground, from Arsenalsgatan subway entrance (Kungsträdgården station) to Kungsbron (north entrance to Cityterminalen bus terminal), covering a distance of between 1 and 2 kilometres.


Switzerland

*
Geneva , neighboring_municipalities= Carouge, Chêne-Bougeries, Cologny, Lancy, Grand-Saconnex, Pregny-Chambésy, Vernier, Veyrier , website = https://www.geneve.ch/ Geneva ( ; french: Genève ) frp, Genèva ; german: link=no, Genf ; it, Ginevr ...
contains a large underground shopping centre which also acts to connect separate sections of surface shops. *
St. Gallen , neighboring_municipalities = Eggersriet, Gaiserwald, Gossau, Herisau (AR), Mörschwil, Speicher (AR), Stein (AR), Teufen (AR), Untereggen, Wittenbach , twintowns = Liberec (Czech Republic) , website = ...
's main hospital uses several tunnels to connect its buildings,
helicopter pad A helipad is a landing area or platform for helicopters and powered lift aircraft. While helicopters and powered lift aircraft are able to operate on a variety of relatively flat surfaces, a fabricated helipad provides a clearly marked hard ...
, pharmacies and storage facilities. *
Zürich Hauptbahnhof Zürich Hauptbahnhof (often shortened to Zürich HB, or just HB; ''Zürich Main Station'' or ''Zürich Central Station'') is the largest railway station in Switzerland. Zürich is a major railway hub, with services to and from across Switzerland ...
in
Zürich , neighboring_municipalities = Adliswil, Dübendorf, Fällanden, Kilchberg, Maur, Oberengstringen, Opfikon, Regensdorf, Rümlang, Schlieren, Stallikon, Uitikon, Urdorf, Wallisellen, Zollikon , twintowns = Kunming, San Francisco Zürich ...
has an underground RailCity
shopping mall A shopping mall (or simply mall) is a North American term for a large indoor shopping center, usually anchored by department stores. The term "mall" originally meant a pedestrian promenade with shops along it (that is, the term was used to refe ...
with full access to the station platforms.


Taiwan

Taipei Taipei (), officially Taipei City, is the capital and a special municipality of the Republic of China (Taiwan). Located in Northern Taiwan, Taipei City is an enclave of the municipality of New Taipei City that sits about southwest of the ...
has underground streets connecting two or more metro stations. In addition, there is a large underground shopping mall near the main train station. *Underground streets around
Taipei Station Taipei Main Station () is a railway and metro station in Taipei, Taiwan. It is served by Taiwan High Speed Rail, the Taiwan Railways Administration, and the Taipei Metro. It is also connected through underground passageways to the terminal sta ...
:
Taipei City Mall Taipei City Mall () is a shopping center located at the intersection of the Datong and Zhongzheng districts in Taipei, Taiwan. It is the first underground market in Taipei City. It is located under Civic Boulevard (市民大道 ''Shìmín Dàdào' ...
,
Eslite Eslite Bookstore () is one of the largest retail bookstore chains in Taiwan. It also offers one of the largest selections of English-language publications and translation materials in Taiwan. Its headquarters is in Xinyi District, Taipei. B ...
underground malls,
Zhongshan Metro Mall The Zhongshan Metro Shopping Mall () is an extensive underground shopping mall in Zhongshan District and Datong District, Taipei, Taiwan. It is located at Changan West Rd., No. 52-1. The mall stretches from Taipei Main Station in the south to ...
, etc. * East Metro Mall, site between Zhongxiao Fuxing and Zhongxiao Dunhua metro stations.


Turkey

*
Cappadocia Cappadocia or Capadocia (; tr, Kapadokya), is a historical region in Central Anatolia, Turkey. It largely is in the provinces Nevşehir, Kayseri, Aksaray, Kırşehir, Sivas and Niğde. According to Herodotus, in the time of the Ionian Re ...
contains several historical underground cities carved out of unusual geological formations formed via the eruptions of ancient volcanoes. The cities were initially inhabited by the
Hittites The Hittites () were an Anatolian people who played an important role in establishing first a kingdom in Kussara (before 1750 BC), then the Kanesh or Nesha kingdom (c. 1750–1650 BC), and next an empire centered on Hattusa in north-centra ...
, then later by early
Christians Christians () are people who follow or adhere to Christianity, a monotheistic Abrahamic religion based on the life and teachings of Jesus Christ. The words '' Christ'' and ''Christian'' derive from the Koine Greek title ''Christós'' (Χρ ...
as hiding places. They are now archeological and tourist sites but are not generally occupied (see
Kaymakli Underground City Kaymakli Underground City ( Turkish: Kaymaklı; Cappadocian Greek: Ανακού) is contained within the citadel of Kaymakli in the Central Anatolia Region of Turkey. First opened to tourists in 1964, the village is about 19 km from Nevşeh ...
,
Derinkuyu underground city The Derinkuyu underground city (Cappadocian Greek: ''Malakopi''; tr, Derinkuyu Yeraltı Şehri) is an ancient multi-level underground city in the Derinkuyu district in Nevşehir Province, Turkey, extending to a depth of approximately . It is la ...
, Özkonak Underground City, Mazı Underground City). The latest large underground city was discovered in 2007 in Gaziemir, Güzelyurt. It was a stopover on the Silk Road, allowing travelers and their camels to rest in safety underground, in a 'fortress' equivalent to a modern hotel. *
Istanbul ) , postal_code_type = Postal code , postal_code = 34000 to 34990 , area_code = +90 212 (European side) +90 216 (Asian side) , registration_plate = 34 , blank_name_sec2 = GeoTLD , blank_i ...
boasts the Roman cisterns, built 2,000 years ago for water storage it is now a tourist attraction.


Ukraine

*
Kyiv Kyiv, also spelled Kiev, is the capital and most populous city of Ukraine. It is in north-central Ukraine along the Dnieper River. As of 1 January 2021, its population was 2,962,180, making Kyiv the seventh-most populous city in Europe. Kyi ...
: An underground concourse extends underneath Khreschatyk Street from
Maidan Nezalezhnosti Maidan Nezalezhnosti ( uk, Майдан Незалежності , literally "Independence Square") is the central square of Kyiv, the capital city of Ukraine. One of the city's main squares, it is located on Khreshchatyk Street in the Shevchen ...
to Ploscha L'va Tolstoho. The concourse connects to the
Kyiv Metro The Kyiv Metro ( uk, Ки́ївський метрополіте́н, Kyivskyi metropoliten, ) is a rapid transit system in Kyiv that is owned by the Kyiv City Council and operated by the city-owned company Kyivsky Metropoliten''.'' It was initi ...
and to the Globe shopping mall beneath Maidan Nezalezhnosti. * Odessa: A ramified tunnel network made from the former quarries that is famous as
Odessa Catacombs The Odesa Catacombs are a labyrinth-like network of tunnels (subterranean cavities) located under the city of Odesa and its outskirts in Ukraine, that are mostly (over 90%) the result of stone mining, particularly coquina.Bachynska, O. Odesa Cataco ...
covers the historical center of Odessa and some suburban areas.


United Kingdom

*
Corsham Corsham is a historic market town and civil parish in west Wiltshire, England. It is at the south-eastern edge of the Cotswolds, just off the A4 national route, southwest of Swindon, southeast of Bristol, northeast of Bath and southwest of ...
,
Wiltshire Wiltshire (; abbreviated Wilts) is a historic and ceremonial county in South West England with an area of . It is landlocked and borders the counties of Dorset to the southwest, Somerset to the west, Hampshire to the southeast, Gloucestershire ...
, is the location of the Central Government War Headquarters, code name 'Burlington'. Built in the late 1950s in response to the increasing threat of nuclear warfare during the Cold War, the subterranean site was designed to be the main emergency government war headquarters of the UK outside London and safely house up to 4,000 central government personnel in the event of a nuclear strike. *In
London London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary dow ...
's redeveloped docklands Canary Wharf tube station, adjacent office towers and shopping malls are connected underground. It is also possible to access two stations of the
Docklands Light Railway The Docklands Light Railway (DLR) is an automated light metro system serving the redeveloped Docklands area of London, England and provides a direct connection between London's two major financial districts, Canary Wharf and the City of Lo ...
without going outside. * Dover contains a series of interconnecting tunnels, that honeycomb both sides of the Dover Valley, carved into the chalk cliffs. These date from Ancient times at
Dover Castle Dover Castle is a medieval castle in Dover, Kent, England and is Grade I listed. It was founded in the 11th century and has been described as the "Key to England" due to its defensive significance throughout history. Some sources say it is the ...
through to Napoleonic, Second and Cold War installations. The Dover Castle complex is the larger, going at least six levels deep and includes a hospital, troops quarters, offices and storage and channel view points. The southern tunnels are mixed between Napoleonic War-era defences (see Dover Western Heights) and Second World War-era defences, with some seafront air raid shelters still used for shop storage today. Many have fallen into disrepair and are now closed to the public, but many are still open. *
London London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary dow ...
: There are extensive rooms, tunnels and chambers known as
Churchill War Rooms The Churchill War Rooms is a museum in London and one of the five branches of the Imperial War Museum. The museum comprises the ''Cabinet War Rooms'', a historic underground complex that housed a British government command centre throughout the ...
or
Admiralty Citadel A number of military citadels are known to have been constructed underground in central London, dating mostly from the Second World War and the Cold War. Unlike traditional above-ground citadels, these sites are primarily secure centres for defen ...
beneath
Whitehall Whitehall is a road and area in the City of Westminster, Central London. The road forms the first part of the A3212 road from Trafalgar Square to Chelsea. It is the main thoroughfare running south from Trafalgar Square towards Parliament Sq ...
, created during World War II, and used by
Winston Churchill Sir Winston Leonard Spencer Churchill (30 November 187424 January 1965) was a British statesman, soldier, and writer who served as Prime Minister of the United Kingdom twice, from 1940 to 1945 during the Second World War, and again from ...
. *There are extensive underground constructions across Britain, such as Chislehurst Caves, built or repurposed as air-raid shelters during World War II. *
Edinburgh Edinburgh ( ; gd, Dùn Èideann ) is the capital city of Scotland and one of its 32 council areas. Historically part of the county of Midlothian (interchangeably Edinburghshire before 1921), it is located in Lothian on the southern shore of t ...
's old town has extensive rooms, tunnels and chambers beneath some areas; of particular note are the Edinburgh Vaults, where overcrowding led people to construct elaborately interconnected buildings in the vaults of the city's South Bridge. *In
Southport Southport is a seaside town in the Metropolitan Borough of Sefton in Merseyside, England. At the 2001 census, it had a population of 90,336, making it the eleventh most populous settlement in North West England. Southport lies on the Iris ...
, Merseyside, Nevill Street has the remainders of an underground shopping street, which can now only be accessed from the cellars of buildings on the current street, which was raised by one storey from the original level. One end of the underground street ended at the Marine Lake, close to the pier entrance. *In
Liverpool Liverpool is a city and metropolitan borough in Merseyside, England. With a population of in 2019, it is the 10th largest English district by population and its metropolitan area is the fifth largest in the United Kingdom, with a populat ...
, the Williamson's tunnels included the site of an 'underground house' complete with windows (concealed by work for public opening) and an extant and partially excavated 'banqueting hall'. *
Nottingham Nottingham ( , locally ) is a city and unitary authority area in Nottinghamshire, East Midlands, England. It is located north-west of London, south-east of Sheffield and north-east of Birmingham. Nottingham has links to the legend of Robi ...
has an extensive network of man-made caves, dating back to the
Early Middle Ages The Early Middle Ages (or early medieval period), sometimes controversially referred to as the Dark Ages, is typically regarded by historians as lasting from the late 5th or early 6th century to the 10th century. They marked the start of the Mi ...
.


United States

* Albany, New York: The Empire State Plaza features an underground city which contains banks, a
YMCA YMCA, sometimes regionally called the Y, is a worldwide youth organization based in Geneva, Switzerland, with more than 64 million beneficiaries in 120 countries. It was founded on 6 June 1844 by George Williams (philanthropist), Georg ...
, restaurants, several food courts, retailers, a police station, a bus station, and a Visitor's Center. The Plaza connects several government buildings to the Egg (a state-owned theater), the
New York State Museum The New York State Museum is a research-backed institution in Albany, New York, United States. It is located on Madison Avenue, attached to the south side of the Empire State Plaza, facing onto the plaza and towards the New York State Capitol ...
, the New York State Library, the
Corning Tower The Erastus Corning Tower, also known as the Mayor Erastus Corning 2nd Tower or simply the Corning Tower, is a skyscraper located in downtown Albany, New York. Completed in 1973 and sided with Vermont Pearl marble and glass, the state office buil ...
, legislative offices, judicial offices, and the
Times Union Center The MVP Arena (originally Knickerbocker Arena, and then the Pepsi Arena and Times Union Center) is an indoor arena located in Albany, New York. It is configurable and can accommodate from 6,000 to 17,500 people, with a maximum seating capacit ...
. The Empire State Plaza Art Collection consists of 92 large-scale
painting Painting is the practice of applying paint, pigment, color or other medium to a solid surface (called the "matrix" or "support"). The medium is commonly applied to the base with a brush, but other implements, such as knives, sponges, and ai ...
s,
sculpture Sculpture is the branch of the visual arts that operates in three dimensions. Sculpture is the three-dimensional art work which is physically presented in the dimensions of height, width and depth. It is one of the plastic arts. Durable ...
s, and
tapestries Tapestry is a form of textile art, traditionally woven by hand on a loom. Tapestry is weft-faced weaving, in which all the warp threads are hidden in the completed work, unlike most woven textiles, where both the warp and the weft threads may ...
at various locations along the main corridor, and features works from the New York School of abstract modern art from the 1960s and 1970s. *
Atlanta Atlanta ( ) is the capital and most populous city of the U.S. state of Georgia. It is the seat of Fulton County, the most populous county in Georgia, but its territory falls in both Fulton and DeKalb counties. With a population of 498,715 ...
,
Georgia Georgia most commonly refers to: * Georgia (country), a country in the Caucasus region of Eurasia * Georgia (U.S. state), a state in the Southeast United States Georgia may also refer to: Places Historical states and entities * Related to the ...
: The "Underground" represents the original surface level of downtown Atlanta; the present streets are raised roadways ( viaducts) built in the 1920s. The shopping center
Underground Atlanta Underground Atlanta is a shopping and entertainment district in the Five Points neighborhood of downtown Atlanta, Georgia, United States, near the Five Points MARTA station. It is currently undergoing renovations. First opened in 1969, it takes ...
, taking advantage of the former street-level storefronts, covers six city blocks and includes retail shopping and restaurants. It was begun in 1968 and re-opened in 1989 after a financially forced closure. *
Boise Boise (, , ) is the capital and most populous city of the U.S. state of Idaho and is the county seat of Ada County. On the Boise River in southwestern Idaho, it is east of the Oregon border and north of the Nevada border. The downtown area' ...
,
Idaho Idaho ( ) is a state in the Pacific Northwest region of the Western United States. To the north, it shares a small portion of the Canada–United States border with the province of British Columbia. It borders the states of Montana and Wyomi ...
: The downtown sector's Capitol Mall Complex consists of a large system of networked tunnels that connect all the state buildings. The tunnels have walkways and vehicle passageways. The underground area boasts a geothermal power plant, a banking system, extensive dining areas, parking, a dedicated mail room for the Capitol Mall Complex and a fallout shelter. The main hall is decorated with art from local artists that was collected over a thirty-year time frame. This collection is not often seen by the public as access is limited. Recent remodeling of the Idaho State Capitol Building has added new underground wings that are linked to the Capitol Mall. These new wings have offices, meeting rooms, and records storage areas and were designed to support the Idaho legislature when it is in session. *
Boston Boston (), officially the City of Boston, is the state capital and most populous city of the Commonwealth of Massachusetts, as well as the cultural and financial center of the New England region of the United States. It is the 24th- mo ...
,
Massachusetts Massachusetts (Massachusett: ''Muhsachuweesut Massachusett_writing_systems.html" ;"title="nowiki/> məhswatʃəwiːsət.html" ;"title="Massachusett writing systems">məhswatʃəwiːsət">Massachusett writing systems">məhswatʃəwiːsət'' En ...
: Northeastern University has a tunnel network linking thirteen buildings in the center of campus. *
Cambridge, Massachusetts Cambridge ( ) is a city in Middlesex County, Massachusetts, United States. As part of the Boston metropolitan area, the cities population of the 2020 U.S. census was 118,403, making it the fourth most populous city in the state, behind Boston ...
: Many of the older buildings of the
Massachusetts Institute of Technology The Massachusetts Institute of Technology (MIT) is a private land-grant research university in Cambridge, Massachusetts. Established in 1861, MIT has played a key role in the development of modern technology and science, and is one of the ...
between Massachusetts Avenue and Ames Street are linked together by underground utility tunnels. *
Chicago (''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name ...
,
Illinois Illinois ( ) is a state in the Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, and the Metro East section, of Greater St. Louis. Other smaller metropolitan areas include, Peoria and Rockf ...
: The
Chicago Pedway The Chicago Pedway is a network of tunnels, ground-level concourses and bridges connecting skyscrapers, retail stores, hotels, and train stations throughout the central business district of Chicago, Illinois. With a length of more than 40 down ...
consists of approximately 4 disjointed tunnel systems, the largest covering about 10 blocks, connecting such buildings and transit stations as
Metra Metra is the commuter rail system in the Chicago metropolitan area serving the city of Chicago and its surrounding suburbs via the Union Pacific Railroad, BNSF Railway, and other railroads. The system operates 242 stations on 11 rail lines. ...
's
Millennium Station Millennium Station (formerly Randolph Street Terminal; sometimes called Randolph Street station or Randolph/South Water Street station) is a major commuter rail terminal in the Loop (downtown), Chicago. It is the northern terminus of the Metra E ...
, the Chicago Cultural Center, the
Macy's Macy's (originally R. H. Macy & Co.) is an American chain of high-end department stores founded in 1858 by Rowland Hussey Macy. It became a division of the Cincinnati-based Federated Department Stores in 1994, through which it is affiliated wi ...
(former
Marshall Field's Marshall Field & Company (commonly known as Marshall Field's) was an upscale department store in Chicago, Illinois. Founded in the 19th century, it grew to become a large chain before Macy's, Inc acquired it in 2005. Its eponymous founder, Mar ...
) store at State and Randolph,
Chicago Transit Authority The Chicago Transit Authority (CTA) is the operator of mass transit in Chicago, Illinois, United States, and some of its surrounding suburbs, including the trains of the Chicago 'L' and CTA bus service. In , the system had a ridership of , ...
's State Street and Dearborn Street subway stations, City Hall, and the
James R. Thompson Center The James R. Thompson Center (JRTC), originally the State of Illinois Center, is a postmodern-style civic building designed by architect Helmut Jahn, located at 100 W. Randolph Street in the Loop district of Chicago. It houses offices of the Ill ...
, along with few residential buildings including
Aqua Aqua is the Latin word for water. It is used in many words which relate to water, such as aquatic life. In English, it may also refer to: Arts * Aqua (color), a greenish-blue color Business * Aqua (skyscraper), an 82-story residential skysc ...
, Columbus Plaza,
The Heritage at Millennium Park The Heritage at Millennium Park, located at 130 N. Garland Court in Chicago, Illinois is a mixed-use tower. Completed in 2005, with a height of and 57 floors, the building was designed by the architectural firm Solomon Cordwell Buenz (architects ...
, the Park Millennium and 200 North Dearborn Apartments. *
Cleveland Cleveland ( ), officially the City of Cleveland, is a city in the U.S. state of Ohio and the county seat of Cuyahoga County. Located in the northeastern part of the state, it is situated along the southern shore of Lake Erie, across the U.S. ...
,
Ohio Ohio () is a state in the Midwestern region of the United States. Of the fifty U.S. states, it is the 34th-largest by area, and with a population of nearly 11.8 million, is the seventh-most populous and tenth-most densely populated. The sta ...
: The
Tower City Center Tower City Center is a large mixed-use facility in Downtown Cleveland, Ohio, on its Public Square. The facility is composed of a number of interconnected office buildings, including Terminal Tower, the Avenue shopping mall, Jack Cleveland Casino ...
, on the public square at the center of downtown Cleveland, houses a shopping mall with a food court, two hotels, and the Tower City Rapid Transit Station, the central station on RTA's Red, Green, and Blue Lines. The building connects to several office buildings, and also has an enclosed skyway to the
Gateway Sports and Entertainment Complex 200px, Logo for the Gateway Sports Complex The Gateway Sports and Entertainment Complex is an entertainment complex located in downtown Cleveland, Ohio. It opened in 1994 and is owned by the city of Cleveland and Cuyahoga County and is managed ...
. * Crystal City,
Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth ar ...
: A residential and commercial area of
Arlington County, Virginia Arlington County is a county in the Commonwealth of Virginia. The county is situated in Northern Virginia on the southwestern bank of the Potomac River directly across from the District of Columbia, of which it was once a part. The county ...
next to the
Ronald Reagan Washington National Airport Ronald Reagan Washington National Airport , sometimes referred to colloquially as National Airport, Washington National, Reagan National Airport, DCA, Reagan, or simply National, is an international airport in Arlington County, Virginia, across ...
, Crystal City features an extensive underground city connecting its hotels, office buildings, and apartment towers and is lined with 173 shops, restaurants, banks, medical, and other services. *
Dallas Dallas () is the List of municipalities in Texas, third largest city in Texas and the largest city in the Dallas–Fort Worth metroplex, the List of metropolitan statistical areas, fourth-largest metropolitan area in the United States at 7.5 ...
,
Texas Texas (, ; Spanish: ''Texas'', ''Tejas'') is a state in the South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2020, it is the second-largest U.S. state by ...
: The
Dallas Pedestrian Network The Dallas Pedestrian Network or Dallas Pedway is a system of grade-separated walkways covering thirty-six city blocks of Downtown Dallas, Texas, United States. The system connects buildings, garages and parks through tunnels and above-ground sky ...
has a network of tunnels connecting buildings in the downtown area. *
Dayton Dayton () is the sixth-largest city in the U.S. state of Ohio and the county seat of Montgomery County. A small part of the city extends into Greene County. The 2020 U.S. census estimate put the city population at 137,644, while Greater Da ...
, Ohio: The academic section of Wright State University's campus contains nearly two miles (3.18 kilometers) of tunnels that link 20 of the 22 buildings. The tunnels were designed to connect the campus without imprinting the surrounding land. *
Detroit, Michigan Detroit ( , ; , ) is the largest city in the U.S. state of Michigan. It is also the largest U.S. city on the United States–Canada border, and the seat of government of Wayne County. The City of Detroit had a population of 639,111 at ...
: The
Fisher Building The Fisher Building is a landmark skyscraper located at 3011 West Grand Boulevard in the heart of the New Center area of Detroit, Michigan. The ornate 30-story building, completed in 1928, is one of the major works of architect Albert Kahn, and ...
, located in New Center, features an underground concourse which connects with the
Albert Kahn Building The Albert Kahn Building, formerly New Center Building, is an office building located at 7430 Second Avenue in the New Center area of Detroit, Michigan completed in 1931. The building was listed on the National Register of Historic Places in 1980 ...
, New Center One, and
Cadillac Place Cadillac Place, formerly the General Motors Building, is a landmark high-rise office complex located at 3044 West Grand Boulevard in the New Center area of Detroit, Michigan. It was renamed for the French founder of Detroit, Antoine Laumet de ...
(formerly the General Motors Building) via a series of skyways and tunnels. *
Duluth , settlement_type = City , nicknames = Twin Ports (with Superior), Zenith City , motto = , image_skyline = , image_caption = Clockwise from top: urban Duluth skyline; Minnesota ...
,
Minnesota Minnesota () is a state in the upper midwestern region of the United States. It is the 12th largest U.S. state in area and the 22nd most populous, with over 5.75 million residents. Minnesota is home to western prairies, now given over to ...
: The city's downtown sector has an extensive network of skyways and tunnels connecting its buildings, including the Federal Courthouse and Convention Center (DECC). * Havre,
Montana Montana () is a state in the Mountain West division of the Western United States. It is bordered by Idaho to the west, North Dakota and South Dakota to the east, Wyoming to the south, and the Canadian provinces of Alberta, British Columb ...
: The city has an underground area, called "Havre Beneath the Streets", that operates as a tourist attraction. *
Houston Houston (; ) is the most populous city in Texas, the most populous city in the Southern United States, the fourth-most populous city in the United States, and the sixth-most populous city in North America, with a population of 2,304,580 i ...
, Texas: The seven-mile (11 km)
Houston tunnel system The Houston tunnel system is a network of subterranean, climate-controlled, pedestrian walkways that links 95 full city blocks below Houston's downtown streets. It is approximately long. There are similar systems in Chicago, Dallas, Oklahoma Ci ...
is set about twenty feet below Houston's downtown street system and is composed of underground passageways which, with above-ground skywalks, link office towers to hotels, banks, corporate and government offices, restaurants, retail stores, and the
Houston Theater District The Houston Theater District, a 17-block area in the heart of Downtown Houston, Texas, United States, is home to Houston's nine professional performing arts organizations, the Bayou Place entertainment complex, restaurants, movies, plazas, and ...
. Only one building, Wells Fargo Plaza, offers direct access from the street to the Tunnel; otherwise, the Tunnel can only be entered via street-level stairs, escalators, or elevators inside a building connected to it. * Irvine, California: A network of large tunnels running beneath the
University of California, Irvine The University of California, Irvine (UCI or UC Irvine) is a public land-grant research university in Irvine, California. One of the ten campuses of the University of California system, UCI offers 87 undergraduate degrees and 129 graduate and p ...
connects many of the campus' major buildings to a central utility plant. These tunnels are only accessible to maintenance staff, although there are also publicly accessible tunnels which intersect the utility tunnels, such as the one that goes between the main Information & Computer Science building and the Engineering Tower. * Kansas City,
Missouri Missouri is a state in the Midwestern region of the United States. Ranking 21st in land area, it is bordered by eight states (tied for the most with Tennessee): Iowa to the north, Illinois, Kentucky and Tennessee to the east, Arkansas t ...
: The city's SubTropolis is a 55,000,000 square foot (5,060,000 m³), 1,100-acre (4.5 km²) underground business complex running along the Missouri River. The space was originally part of the Bethany Falls limestone mine, and was later repurposed for use as a commercial underground storage facility. *
Minneapolis Minneapolis () is the largest city in Minnesota, United States, and the county seat of Hennepin County. The city is abundant in water, with thirteen lakes, wetlands, the Mississippi River, creeks and waterfalls. Minneapolis has its origins ...
and
Saint Paul Paul; grc, Παῦλος, translit=Paulos; cop, ⲡⲁⲩⲗⲟⲥ; hbo, פאולוס השליח (previously called Saul of Tarsus;; ar, بولس الطرسوسي; grc, Σαῦλος Ταρσεύς, Saũlos Tarseús; tr, Tarsuslu Pavlus; ...
, Minnesota: There are three major systems consisting mostly of above-ground skyways in the Twin Cities. The
Minneapolis Skyway System The Minneapolis Skyway System is an interlinked collection of enclosed pedestrian footbridges that connect various buildings in 80 full city blocks over of Downtown Minneapolis, enabling people to walk in climate-controlled comfort year-ro ...
covers approximately 11 miles with 62 skyways. St. Paul's skyway system connects buildings in a 30-block radius in the downtown core. On the
University of Minnesota The University of Minnesota, formally the University of Minnesota, Twin Cities, (UMN Twin Cities, the U of M, or Minnesota) is a public land-grant research university in the Twin Cities of Minneapolis and Saint Paul, Minnesota, United States. ...
Minneapolis and St Paul campuses, the Gopher Way connects most buildings and parking structures together using a number of skyway links and tunnels. A system of tunnels connects state office buildings around the
Minnesota State Capitol The Minnesota State Capitol is the seat of government for the U.S. state of Minnesota, in its capital city of Saint Paul. It houses the Minnesota Senate, Minnesota House of Representatives, the office of the Attorney General and the office ...
. A series of tunnels also connect the
Hennepin County Government Center Hennepin County Government Center is the courthouse and primary county government administration building for Hennepin County in the U.S. state of Minnesota. It is located in downtown Minneapolis, the county seat of Hennepin County. Before its c ...
,
Minneapolis City Hall Minneapolis City Hall and Hennepin County Courthouse (also known as the Municipal Building), designed by Long and Kees in 1888, is the main building used by the city government of Minneapolis, as well as by Hennepin County, in the U.S. state of M ...
, and the
United States District Court for the District of Minnesota The United States District Court for the District of Minnesota (in case citations, D. Minn.) is the federal district court whose jurisdiction is the state of Minnesota. Its two primary courthouses are in Minneapolis and Saint Paul. Cases are al ...
. *
New York City New York, often called New York City or NYC, is the most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the most densely populated major city in the Un ...
, New York: Several New York City Subway stations have direct access to one or more buildings. Additionally, most of the lower floor of the
Rockefeller Center Rockefeller Center is a large complex consisting of 19 commercial buildings covering between 48th Street and 51st Street in Midtown Manhattan, New York City. The 14 original Art Deco buildings, commissioned by the Rockefeller family, span th ...
qualifies as an underground city, as it features connections to subways, an extensive underground concourse, building connections, and several restaurants, all below ground. The area around
Times Square Times Square is a major commercial intersection, tourist destination, entertainment hub, and neighborhood in Midtown Manhattan, New York City. It is formed by the junction of Broadway, Seventh Avenue, and 42nd Street. Together with adjacent ...
and the
Port Authority Bus Terminal The Port Authority Bus Terminal (colloquially known as the Port Authority and by its acronym PABT) is a bus terminal located in Manhattan in New York City. It is the busiest bus terminal in the world by volume of traffic, serving about 8,000 buse ...
forms an underground network several blocks in size; much of it is within the Subway's
fare control In rail transport, the paid area is a dedicated "inner" zone in a railway station or metro station, accessible via turnstiles or other barriers, to get into which, visitors or passengers require a valid ticket, checked smartcard or a pass. A sys ...
. A series of tunnels connect
Brookfield Place (New York City) Brookfield Place (previously named and still commonly referred to as the World Financial Center) is a shopping center and office building complex in the New York City borough of Manhattan. It is located in the Battery Park City neighborhood, acr ...
through the World Trade Center's lower levels, to the
Fulton Center Fulton Center is a subway and retail complex centered at the intersection of Fulton Street and Broadway in Lower Manhattan, New York City. The complex was built as part of a $1.4 billion project by the Metropolitan Transportation Authority ( ...
, forming an underground city with several subway stations and many shops and restaurants. *
Oklahoma City Oklahoma City (), officially the City of Oklahoma City, and often shortened to OKC, is the capital and largest city of the U.S. state of Oklahoma. The county seat of Oklahoma County, it ranks 20th among United States cities in population, a ...
, Oklahoma: The Oklahoma City Underground (formerly the Oklahoma City Conncourse) is a tunnel system connecting nearly all of the downtown buildings in a 20-square-block area. It is one of the most extensive all-enclosed pedestrian systems in the U.S., extending three-quarters of a mile and connecting over 30 downtown buildings via tunnels or skyways. The original tunnel link was built in 1931 and the system was extended in the 1970s. It underwent a $2 million renovation in 2006–2007, after which the Conncourse was renamed the Underground. *
Philadelphia Philadelphia, often called Philly, is the List of municipalities in Pennsylvania#Municipalities, largest city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, the List of United States cities by population, sixth-largest city i ...
,
Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...
: Center City has several miles of interconnected underground concourses under
Market Market is a term used to describe concepts such as: *Market (economics), system in which parties engage in transactions according to supply and demand *Market economy *Marketplace, a physical marketplace or public market Geography *Märket, an ...
,
Broad Broad(s) or The Broad(s) may refer to: People * A slang term for a woman. * Broad (surname), a surname Places * Broad Peak, on the border between Pakistan and China, the 12th highest mountain on Earth * The Broads, a network of mostly na ...
, and
Locust Locusts (derived from the Vulgar Latin ''locusta'', meaning grasshopper) are various species of short-horned grasshoppers in the family Acrididae that have a swarming phase. These insects are usually solitary, but under certain circumstanc ...
Streets, and JFK Boulevard. The system includes nine
rapid transit Rapid transit or mass rapid transit (MRT), also known as heavy rail or metro, is a type of high-capacity public transport generally found in urban areas. A rapid transit system that primarily or traditionally runs below the surface may be ...
and regional rail stations served by 23
SEPTA The Southeastern Pennsylvania Transportation Authority (SEPTA) is a regional public transportation authority that operates bus, rapid transit, commuter rail, light rail, and electric trolleybus services for nearly 4 million people in five c ...
and PATCO lines, and the lower levels of several shopping centers. It is also connected to the lower levels of many office buildings and several department stores and hotels, as well as the customer service counters of the Municipal Services Building. A branch of the
US Post Office The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or Postal Service, is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the U. ...
is located in the Suburban Station section of the concourse. * Richmond, Virginia: There are a series of connected tunnels between state government buildings in the city of Richmond. Certain passageways are locked off but a good portion of the tunnels are accessible from buildings. The purpose of the tunnels is not generally known; the two most common explanations are that they were built to allow people to move between buildings in inclement weather or that they were built as part of an emergency evacuation plan. *
Rochester Rochester may refer to: Places Australia * Rochester, Victoria Canada * Rochester, Alberta United Kingdom *Rochester, Kent ** City of Rochester-upon-Medway (1982–1998), district council area ** History of Rochester, Kent ** HM Prison ...
, Minnesota: The Mayo Clinic's buildings in the downtown area are interconnected with tunnels and skyways. Other businesses are along the corridors, including a number of
hotel A hotel is an establishment that provides paid lodging on a short-term basis. Facilities provided inside a hotel room may range from a modest-quality mattress in a small room to large suites with bigger, higher-quality beds, a dresser, a re ...
s that often house clinic patients. It is often called a subway, although there are no underground rails in the city. *
Rochester Rochester may refer to: Places Australia * Rochester, Victoria Canada * Rochester, Alberta United Kingdom *Rochester, Kent ** City of Rochester-upon-Medway (1982–1998), district council area ** History of Rochester, Kent ** HM Prison ...
, New York: Nazareth College in the southeast portion of Rochester has an extensive underground network of tunnels leading from the
dormitories A dormitory (originated from the Latin word ''dormitorium'', often abbreviated to dorm) is a building primarily providing sleeping and residential quarters for large numbers of people such as boarding school, high school, college or university s ...
to the major buildings on campus.
Rochester Institute of Technology Rochester Institute of Technology (RIT) is a private research university in the town of Henrietta in the Rochester, New York, metropolitan area. The university offers undergraduate and graduate degrees, including doctoral and professional ...
has several underground networks connecting dormitories and academic buildings together. The
University of Rochester The University of Rochester (U of R, UR, or U of Rochester) is a private university, private research university in Rochester, New York. The university grants Undergraduate education, undergraduate and graduate degrees, including Doctorate, do ...
has an underground network connecting many of its academic buildings. *
Seattle Seattle ( ) is a seaport city on the West Coast of the United States. It is the seat of King County, Washington. With a 2020 population of 737,015, it is the largest city in both the state of Washington and the Pacific Northwest regio ...
,
Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered o ...
: Several modern undergrounds and a historical tour exist. The
Westlake Center Westlake Center is a four-story shopping center and 25-story office tower in downtown Seattle, Washington, United States. The southern terminus of the Seattle Center Monorail, it is located across Pine Street from Westlake Park, between 4th and ...
shopping mall and its surrounding department stores have underground entrances to the mezzanine level of the Westlake light rail station in the
Downtown Seattle Transit Tunnel The Downtown Seattle Transit Tunnel (DSTT), also referred to as the Metro Bus Tunnel, is a pair of public transit tunnels in Seattle, Washington, United States. The double-track tunnel and its four stations serve Link light rail trains on th ...
. Another substantial corridor extends from Two Union Square to
Rainier Square Rainier Tower is a 41-story, skyscraper in the Metropolitan Tract of Seattle, Washington, at 1301 Fifth Avenue. It was designed by Minoru Yamasaki, who designed the World Trade Center in New York City as well as the IBM Building, which is on ...
, with connections to hotels, the 5th Avenue Theatre, and many retail shops along the way. The Seattle Underground Tour in Pioneer Square takes visitors on a humorous guided walk showing the original ground level of many buildings in that area. * Vicksburg, Mississippi: During the
Siege of Vicksburg The siege of Vicksburg (May 18 – July 4, 1863) was the final major military action in the Vicksburg campaign of the American Civil War. In a series of maneuvers, Union Maj. Gen. Ulysses S. Grant and his Army of the Tennessee crossed the Mis ...
in 1863, Union gunboats lobbed over 22,000 shells into the town, destroying nearly all of the town's housing. As a result, over 500 caves were dug into the clay hills surrounding Vicksburg. The Union soldiers later gave the town the nickname of "Prairie Dog Village" due to these caves. *
Walt Disney World The Walt Disney World Resort, also called Walt Disney World or Disney World, is an entertainment resort complex in Bay Lake and Lake Buena Vista, Florida, United States, near the cities of Orlando and Kissimmee. Opened on October 1, 1971, ...
,
Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...
(southwest of Orlando, Florida) has a network of
utility tunnel A utility tunnel, utility corridor, or utilidor is a passage built underground or above ground to carry utility lines such as electricity, steam, water supply pipes, and sewer pipes. Communications utilities like fiber optics, cable television ...
s used by its employees for transportation between venues, rest areas, staff preparation, and first aid. The main system is under the Magic Kingdom theme park. Other tunnels lie underneath Future World at
Epcot Epcot, stylized in all uppercase as EPCOT, is a theme park at the Walt Disney World Resort in Bay Lake, Florida. It is owned and operated by The Walt Disney Company through its Parks, Experiences and Products division. Inspired by an unreal ...
. *
Washington D.C. ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, Na ...
: All of the buildings in the
United States Capitol Complex The United States Capitol Complex is a group of twenty buildings and facilities ( complex of buildings) in Washington, D.C., that are used by the federal government of the United States. The buildings and grounds within the complex are managed a ...
are connected by tunnels and underground walkways, which provide easy passage between legislative office buildings, the
Capitol A capitol, named after the Capitoline Hill in Rome, is usually a legislative building where a legislature meets and makes laws for its respective political entity. Specific capitols include: * United States Capitol in Washington, D.C. * Numerous ...
, the Capitol Visitor Center, and the
Library of Congress The Library of Congress (LOC) is the research library that officially serves the United States Congress and is the ''de facto'' national library of the United States. It is the oldest federal cultural institution in the country. The library ...
in inclement weather. The tunnels connecting office buildings are open to the public, but those connecting to the Capitol require security clearance to use. Small electric tramways run from the Capitol building to the Russell, Dirksen, and
Hart Hart often refers to: * Hart (deer) Hart may also refer to: Organizations * Hart Racing Engines, a former Formula One engine manufacturer * Hart Skis, US ski manufacturer * Hart Stores, a Canadian chain of department stores * Hart's Reptile Wo ...
Senate Office Buildings and to the
Rayburn House Office Building The Rayburn House Office Building (RHOB) is a congressional office building for the U.S. House of Representatives in the Capitol Hill neighborhood of Washington, D.C., between South Capitol Street and First Street. Rayburn is named after form ...
. The tunnel between the Capitol and the
Cannon House Office Building The Cannon House Office Building, often called the "Old House Office Building," completed in 1908, is the oldest congressional office building as well as a significant example of the Beaux-Arts style of architecture. It occupies a site south of t ...
displays winning pieces of artwork from the annual Congressional Art Competition for high school students. * Wellesley,
Massachusetts Massachusetts (Massachusett: ''Muhsachuweesut Massachusett_writing_systems.html" ;"title="nowiki/> məhswatʃəwiːsət.html" ;"title="Massachusett writing systems">məhswatʃəwiːsət">Massachusett writing systems">məhswatʃəwiːsət'' En ...
: There is an underground network connecting several buildings at Wellesley College.


See also

Other parent categories from the same field: *
Rock-cut architecture Rock-cut architecture is the creation of structures, buildings, and sculptures by excavating solid rock where it naturally occurs. Intensely laborious when using ancient tools and methods, rock-cut architecture was presumably combined with quarry ...
* Subterranea (geography): underground structures *
Underground living Underground living refers to living below the ground's surface, whether in natural or manmade caves or structures. Underground dwellings are an alternative to above-ground dwellings for some home seekers, including those who are looking to mini ...
*
Underground construction Underground construction refers to the construction of underground tunnels, shafts, chambers, and passageways, it is also sometimes used to describe the portion of traditional construction that takes place below grade. History Neanderthals also e ...
Types of underground spaces and people, and related topics: *
Ant tribe "Ant tribe" () is a neologism for a group of low-income university graduates who settle for a poverty-level existence in the cities of China. Those who belong to the ant tribe class hope that, in time, they will find the jobs for which they wer ...
– Chinese sociology term *
Rat tribe Rat tribe () is a neologism used to describe low income migrant workers who live in underground accommodations within Chinese cities. Official estimates are of 281,000 people living in Beijing's underground, although estimates of up to one milli ...
*
Arcology Arcology, a portmanteau of "architecture" and "ecology",. is a field of creating architectural design principles for very densely populated and ecologically low-impact human habitats. The term was coined in 1969 by architect Paolo Soleri, who be ...
– ecological architecture term * Catacombs *''
Cities of the Underworld ''Cities of the Underworld'' is an American documentary television series that premiered on March 2, 2007, on the History channel. The program explores the subterranean environment and culture beneath various civilizations. The series was origi ...
'' documentary television series *
Mole people Mole people (also called tunnel people or tunnel dwellers) are homeless people living under large cities in abandoned subway, railroad, flood, sewage tunnels, and heating shafts. The term may also refer to the speculative fiction trope of an en ...
– homeless tunnel dwellers *
Pedway Pedways (short for pedestrian walkways) are elevated or underground walkways, often connecting urban high-rises to each other, other buildings, or the street. They provide quick and comfortable movement from building to building, away from traff ...
– elevated or underground walkways *
Rapid transit Rapid transit or mass rapid transit (MRT), also known as heavy rail or metro, is a type of high-capacity public transport generally found in urban areas. A rapid transit system that primarily or traditionally runs below the surface may be ...
(subway) *
Secret passage Secret passages, also commonly referred to as hidden passages or secret tunnels, are hidden routes used for stealthy travel, escape, or movement of people and goods. They are sometimes inside buildings leading to secret rooms. Others allow peop ...
**
Tunnels in popular culture Mysterious tunnels or "secret passages" are a common element of the local folklore tradition in Europe. Such tunnels are said to physically link prominent places such as country houses, castles, churches, ancient monuments and other, often med ...
*
Skyway A skyway, skybridge, skywalk, or sky walkway is an elevated type of pedway connecting two or more buildings in an urban area, or connecting elevated points within mountainous recreational zones. Urban skyways very often take the form of enclo ...
*
Utility tunnel A utility tunnel, utility corridor, or utilidor is a passage built underground or above ground to carry utility lines such as electricity, steam, water supply pipes, and sewer pipes. Communications utilities like fiber optics, cable television ...


References

{{Authority control Pedestrian infrastructure Urban exploration