Burj Khalifa The Burj Khalifa (; ar, برج خليفة, , Khalifa Tower), known as the Burj Dubai prior to its inauguration in 2010, is a skyscraper in Dubai, United Arab Emirates. It is known for being the world’s tallest building. With a total height ...

Dubai Dubai (, ; ar, دبي, translit=Dubayy, , ) is the most populous city in the United Arab Emirates (UAE) and the capital of the Emirate of Dubai, the most populated of the 7 emirates of the United Arab Emirates.The Government and Politics ...

United Arab Emirates The United Arab Emirates (UAE; ar, اَلْإِمَارَات الْعَرَبِيَة الْمُتَحِدَة ), or simply the Emirates ( ar, الِْإمَارَات ), is a country in Western Asia ( The Middle East). It is located at ...

tallest building in the world This list of tallest buildings includes skyscrapers with continuously occupiable floors and a height of at least . Non-building structures, such as towers, are not included in this list (for these, see '' List of tallest buildings and structu ...

Skidmore, Owings and Merrill Skidmore, Owings & Merrill (SOM) is an American architectural, urban planning and engineering firm. It was founded in 1936 by Louis Skidmore and Nathaniel Owings in Chicago, Illinois. In 1939, they were joined by engineer John Merrill. The firm ...

Tokyo Skytree is a broadcasting and observation tower in Sumida, Tokyo. It became the tallest structure in Japan in 2010guyed structure is the KVLY-TV mast at 1987 feet. The

Council on Tall Buildings and Urban Habitat The Council on Tall Buildings and Urban Habitat (CTBUH) is an international body in the field of tall buildings and sustainable urban design. A non-profit organization based at the Monroe Building in the city of Chicago, Illinois, United State ...

, an organization that certifies buildings as the "World's Tallest", recognizes a building only if at least 49% of its height is made up of floor plates containing habitable floor area. Structures that do not meet this criterion, such as the

CN Tower The CN Tower (french: Tour CN) is a concrete communications and observation tower in downtown Toronto, Ontario, Canada. Built on the former Railway Lands, it was completed in 1976. Its name "CN" referred to Canadian National, the railwa ...

, are defined as "

tower A tower is a tall structure, taller than it is wide, often by a significant factor. Towers are distinguished from masts by their lack of guy-wires and are therefore, along with tall buildings, self-supporting structures. Towers are specifi ...

s". There are dozens of radio and television broadcasting towers which measure over 600 metres (about 2,000 ft) in height, and only the tallest are recorded in publicly available information sources.

Debate over definition

The assessment of the height of artificial structures has been controversial. Because varying standards have been used by different organizations, the accepted height of these structures or buildings depends on which standards are accepted. The Council on Tall Buildings and Urban Habitat has changed its definitions over time. Some of the controversy regarding the definitions and assessment of tall structures and buildings has included the following: * the definition of a structure, a building and a tower * whether a structure, building or tower under construction should be included in any assessment * whether a structure, building or tower has to be officially opened before it is assessed * whether structures built in and rising above water should have their below-water height included in any assessment. * whether a structure, building or tower that is guyed is assessed in the same category as self-supporting structures. Within an accepted definition of a building further controversy has included the following factors: * whether only habitable height of the building is considered * whether communication towers with observation galleries should be considered "habitable" in this sense * whether rooftop antennas, viewing platforms or any other architecture that does not form a habitable floor should be included in the assessment * whether a floor built at a high level of a telecommunications or viewing tower should change the tower's definition to that of a "building"

Tallest structures

This category does not require the structure to be "officially" open, but does require it to be "topped out." The tallest artificial structure is

Burj Khalifa The Burj Khalifa (; ar, برج خليفة, , Khalifa Tower), known as the Burj Dubai prior to its inauguration in 2010, is a skyscraper in Dubai, United Arab Emirates. It is known for being the world’s tallest building. With a total height ...

, a skyscraper in Dubai that reached in height on January 17, 2009. By April 8, 2008 it had been built higher than the KVLY-TV mast in North Dakota, US. That September it officially surpassed

Poland Poland, officially the Republic of Poland, , is a country in Central Europe. Poland is divided into Voivodeships of Poland, sixteen voivodeships and is the fifth most populous member state of the European Union (EU), with over 38 mill ...

's Warsaw radio mast, which stood from 1974 to 1991, to become the tallest structure ever built. Guyed lattice towers such as these masts had held the world height record since 1954. The Petronius Platform stands off the sea floor, leading some, including ''

Guinness World Records ''Guinness World Records'', known from its inception in 1955 until 1999 as ''The Guinness Book of Records'' and in previous United States editions as ''The Guinness Book of World Records'', is a reference book published annually, listing world ...

'' 2007, to claim it as the tallest freestanding structure in the world, until surpassed by the Burj Khalifa in 2010. However, it is debated whether underwater height should be counted, in the same manner as height below ground is ignored on buildings. The Troll A platform is , without any part of that height being supported by wires. The tension-leg type of oil platform has even greater below-water heights with several examples more than deep. However, these platforms are not considered constant structures as the vast majority of their height is made up of the length of the tendons attaching the floating platforms to the sea floor. Despite this, ''Guinness World Records'' 2009 listed the Ursa tension leg platform as the tallest structure in the world with a total height of . The Magnolia Tension-leg Platform in the

Gulf of Mexico The Gulf of Mexico ( es, Golfo de México) is an ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United S ...

is even taller with a total height of .

Taipei 101 Taipei 101 (; stylized as TAIPEI 101), formerly known as the Taipei World Financial Center, is a supertall skyscraper in Taipei, Taiwan. This building was officially classified as the world's tallest from its opening in 2004 until the 2009 ...

in Taipei, Taiwan, set records in three of the four skyscraper categories at the time it opened in 2004; at the time the Burj Khalifa opened in 2010 it remained the world's tallest inhabited building as measured to its architectural height (spire). The height of its roof and highest occupied floor had been surpassed by the Shanghai World Financial Center with corresponding heights of .

Willis Tower The Willis Tower (originally the Sears Tower) is a 108-story, skyscraper in the Loop community area of Chicago in Illinois, United States. Designed by architect Bruce Graham and engineer Fazlur Rahman Khan of Skidmore, Owings & Merrill (SOM), ...

(formerly Sears Tower) was the highest in the final category: the greatest height to top of antenna of any building in the world at . Burj Khalifa broke the height record in all four categories for completed buildings.

Tallest structure by category

Due to the disagreements over how to measure height and classify structures, engineers have created various definitions for categories of buildings and other structures. One measure includes the absolute height of a building, another includes only

spire A spire is a tall, slender, pointed structure on top of a roof of a building or tower, especially at the summit of church steeples. A spire may have a square, circular, or polygonal plan, with a roughly conical or pyramidal shape. Spires are ...

s and other permanent architectural features, but not antennas. The tradition of including the spire on top of a building and not including the antenna dates back to the rivalry between the

Chrysler Building The Chrysler Building is an Art Deco skyscraper on the East Side of Manhattan in New York City, at the intersection of 42nd Street and Lexington Avenue in Midtown Manhattan. At , it is the tallest brick building in the world with a steel f ...

and

40 Wall Street 40 Wall Street, also known as the Trump Building, is a Gothic Revival architecture, neo-Gothic skyscraper on Wall Street between Nassau Street (Manhattan), Nassau and William Street (Manhattan), William streets in the Financial District, Manh ...

. A modern-day example is that the antenna on top of

Willis Tower The Willis Tower (originally the Sears Tower) is a 108-story, skyscraper in the Loop community area of Chicago in Illinois, United States. Designed by architect Bruce Graham and engineer Fazlur Rahman Khan of Skidmore, Owings & Merrill (SOM), ...

(formerly Sears Tower) is not considered part of its architectural height, while the spires on top of the Petronas Twin Towers are counted. ''Note:'' The following table is a list of the tallest completed structure in each of the structural categories below. For a list of structures by function see the list later in the article. There can only be one structure in each category, unless the tallest is the same for more than one structure in the same category.

Tallest destroyed structures by category, not surpassed by existing structures

There are some destroyed architectural structures which were taller than the tallest existing structure of their type. There are also destroyed structures omitted from this list that had been surpassed in height prior to being destroyed.

Tallest structure by function

* "Mixed-use" is defined as having three or more real estate uses (such as retail, office, hotel, etc.) that are physically and functionally integrated in a single property and are mutually supporting.

Tallest buildings

Up until the late 1990s, the definition of “tallest building” was not altogether clear. It was generally understood to be the height of the building to the top of its architectural elements including spires, but not including "temporary" structures (such as antennas or flagpoles), which could be added or changed relatively easily without requiring major changes to the building's design. Other criteria for height measurement generally were not considered, which occasionally caused some controversy. One historic case involved the building now famous for the Times Square Ball. Known as

One Times Square One Times Square (also known as 1475 Broadway, the New York Times Building, the New York Times Tower, or simply as the Times Tower) is a 25-story, skyscraper on Times Square in the Midtown Manhattan neighborhood of New York City. Designed by ...

(at 1475 Broadway in

Midtown Manhattan Midtown Manhattan is the central portion of the New York City borough of Manhattan and serves as the city's primary central business district. Midtown is home to some of the city's most prominent buildings, including the Empire State Buildin ...

), it was the headquarters for ''

The New York Times ''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid ...

, '' which gave

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 ...

its name. Completed in 1905, it reached a height of to its roof, or including its rooftop flagpole, which the ''Times'' hoped would give it a record high status but because a flagpole is not an integral architectural part of a building, One Times Square was not generally considered to be taller than the Park Row Building in

Lower Manhattan Lower Manhattan (also known as Downtown Manhattan or Downtown New York) is the southernmost part of Manhattan, the central borough for business, culture, and government in New York City, which is the most populated city in the United States with ...

, which was therefore still New York's tallest. A bigger controversy was the rivalry between two

New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * '' ...

skyscrapers built in the

Roaring Twenties The Roaring Twenties, sometimes stylized as Roaring '20s, refers to the 1920s decade in music and fashion, as it happened in Western society and Western culture. It was a period of economic prosperity with a distinctive cultural edge in the ...

—the

Chrysler Building The Chrysler Building is an Art Deco skyscraper on the East Side of Manhattan in New York City, at the intersection of 42nd Street and Lexington Avenue in Midtown Manhattan. At , it is the tallest brick building in the world with a steel f ...

and

40 Wall Street 40 Wall Street, also known as the Trump Building, is a Gothic Revival architecture, neo-Gothic skyscraper on Wall Street between Nassau Street (Manhattan), Nassau and William Street (Manhattan), William streets in the Financial District, Manh ...

. The latter was tall, had a shorter pinnacle, and had a much higher top occupied floor (the second category in the 1996 criteria for tallest building). In contrast, the Chrysler Building employed a very long spire secretly assembled inside the building to claim the title of world's tallest building with a total height of , despite having a lower top occupied floor and a shorter height when both buildings' spires are not counted in their heights. Although the architects of record for 40 Wall were

H. Craig Severance Harold Craig Severance (July 1, 1879 – September 2, 1941) was an American architect who designed a number of well-known buildings in New York City, including the Coca-Cola Building, Nelson Tower and most prominently, 40 Wall Street. Biograp ...

and

Yasuo Matsui Yasuo Matsui (1877 – 1962) was a prominent 20th century Japanese American architect.Gray, Christopher (2012) in The New York Times. (Accessed: 11 February 2017) Early years Immigrating from Japan to the United States in 1902, Matsui attended ...

, the firm of Shreve & Lamb (who also designed the

Empire State Building The Empire State Building is a 102-story Art Deco skyscraper in Midtown Manhattan, New York City. The building was designed by Shreve, Lamb & Harmon and built from 1930 to 1931. Its name is derived from " Empire State", the nickname of the ...

) served as consulting architects. They wrote a newspaper article claiming that 40 Wall was actually the tallest, since it contained the world's highest usable floor. They pointed out that the observation deck of 40 Wall was nearly higher than the top floor of the Chrysler, whose surpassing spire was strictly ornamental and essentially inaccessible. Despite the protest, the Chrysler Building was generally accepted as the tallest building in the world for almost a year, until it was surpassed by the

Empire State Building The Empire State Building is a 102-story Art Deco skyscraper in Midtown Manhattan, New York City. The building was designed by Shreve, Lamb & Harmon and built from 1930 to 1931. Its name is derived from " Empire State", the nickname of the ...

’s in 1931. That was in turn surpassed by the twin towers of New York’s original World Trade Center in 1972, which were in turn surpassed by the Sears Tower in

Chicago (''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = List of sovereign states, Count ...

in 1974. Now called the

Willis Tower The Willis Tower (originally the Sears Tower) is a 108-story, skyscraper in the Loop community area of Chicago in Illinois, United States. Designed by architect Bruce Graham and engineer Fazlur Rahman Khan of Skidmore, Owings & Merrill (SOM), ...

since 2009, it was to its flat rooftop, or including its original antennas. But in 1978 One World Trade Center (commonly known as the north tower) attained a taller absolute height when it added its new broadcasting antenna, for a total height of . The WTC north tower maintained this height record (including its antenna) from 1978 until 2000, when the owners of the Willis Tower extended its broadcasting antennae for a total height of . Thus the status of the Willis Tower as the “totally” tallest was restored in the face of a new threat looming in the

Far East The ''Far East'' was a European term to refer to the geographical regions that includes East and Southeast Asia as well as the Russian Far East to a lesser extent. South Asia is sometimes also included for economic and cultural reasons. The te ...

—the “ Siamese Twins.” Petronas Twin Towers 2010 April

A major controversy erupted upon completion of the

Petronas Towers The Petronas Towers, also known as the Petronas Twin Towers or KLCC Twin Towers, ( Malay: ''Menara Berkembar Petronas'') are 88-storey supertall skyscrapers in Kuala Lumpur, Malaysia, standing at . From 1998 to 2003, they were officially desig ...

in

Kuala Lumpur, Malaysia , anthem = ''Maju dan Sejahtera'' , image_map = , map_caption = , pushpin_map = Malaysia#Southeast Asia#Asia , pushpin_map_caption = , coordinates = , sub ...

in 1998. These twin towers, at , had a higher architectural height (spires, not antennas), but a lower absolute pinnacle height and a lower top occupied floor than the

Willis Tower The Willis Tower (originally the Sears Tower) is a 108-story, skyscraper in the Loop community area of Chicago in Illinois, United States. Designed by architect Bruce Graham and engineer Fazlur Rahman Khan of Skidmore, Owings & Merrill (SOM), ...

in

Chicago (''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = List of sovereign states, Count ...

. Counting buildings as structures with floors throughout, and with antenna masts excluded, the Willis was still considered the tallest at that time. Excluding their spires, which are higher than the flat roof of Willis, the Petronas Towers are not taller than Willis. At their convention in Chicago, the

Council on Tall Buildings and Urban Habitat The Council on Tall Buildings and Urban Habitat (CTBUH) is an international body in the field of tall buildings and sustainable urban design. A non-profit organization based at the Monroe Building in the city of Chicago, Illinois, United State ...

(CTBUH) found the Willis Tower (without its antennas) to be the third-tallest building, and the Petronas Towers (with their spires) to be the world's two tallest buildings. Responding to the ensuing controversy, the CTBUH then revised their criteria and defined four categories in which the world's tallest building can be measured, retaining the old criterion of height to architectural top, and adding three new categories: # Height to Architectural Top (including

spire A spire is a tall, slender, pointed structure on top of a roof of a building or tower, especially at the summit of church steeples. A spire may have a square, circular, or polygonal plan, with a roughly conical or pyramidal shape. Spires are ...

s and pinnacles, but not antennas, masts or flagpoles). This measurement is the most widely used and is used to define the rankings of the 100 Tallest Buildings in the World. # Highest Occupied Floor # Height to Top of Roof (omitted from criteria from November 2009 onwards) # Height to Tip The height-to-roof criterion was discontinued because relatively few modern tall buildings possess flat rooftops, making this criterion difficult to determine and measure. The CTBUH has further clarified their definitions of building height, including specific criteria concerning subbasements and ground level entrances (height measured from lowest, significant, open-air, pedestrian entrance rather than from a previously undefined "main entrance"), building completion (must be topped out both structurally and architecturally, fully clad, ''and'' able to be occupied), condition of the highest occupied floor (must be continuously used by people living or working and be conditioned, thus including

observation deck An observation deck, observation platform, or viewing platform is an elevated sightseeing platform usually situated upon a tall architectural structure, such as a skyscraper or observation tower. Observation decks are sometimes enclose ...

s, but not mechanical floors) and other aspects of tall buildings. The height is measured from the level of the lowest, significant, open-air, pedestrian entrance. At the time, the Willis Tower held first place in the second and third categories, the Petronas Towers held the first category, and the original WTC north tower held the fourth (height to tip) category with its antenna. In 2000, however, a new antenna mast was placed on the Willis Tower, giving it the record in the fourth category. On April 20, 2004, the 101-storey

Taipei 101 Taipei 101 (; stylized as TAIPEI 101), formerly known as the Taipei World Financial Center, is a supertall skyscraper in Taipei, Taiwan. This building was officially classified as the world's tallest from its opening in 2004 until the 2009 ...

in

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 ...

,

Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the northe ...

, was completed, taking the world record for the first three categories. On July 21, 2007, it was announced that

Burj Khalifa The Burj Khalifa (; ar, برج خليفة, , Khalifa Tower), known as the Burj Dubai prior to its inauguration in 2010, is a skyscraper in Dubai, United Arab Emirates. It is known for being the world’s tallest building. With a total height ...

in Dubai, UAE, had surpassed Taipei 101. Since its completion in early 2010, Burj Khalifa leads in all categories (the first building to do so) with its spire height of . Before Burj Khalifa was completed, Willis Tower led in the height-to-tip category with after its antenna was extended in 2000, making Willis Tower slightly taller height-to-tip than the WTC north tower's antenna that measured . After the terrorist attacks on September 11, 2001, the WTC became the world's tallest two buildings to be destroyed or demolished. They took that distinction from the Singer Building, which stood tall until the late 1960s where One Liberty Plaza now stands right across Church Street from the WTC site. A different superlative for skyscrapers is their number of floors. The original World Trade Center set that record at 110 in the early 1970s, and this was not surpassed until the Burj Khalifa opened in 2010. Tall freestanding structures such as the

CN Tower The CN Tower (french: Tour CN) is a concrete communications and observation tower in downtown Toronto, Ontario, Canada. Built on the former Railway Lands, it was completed in 1976. Its name "CN" referred to Canadian National, the railwa ...

, the

Ostankino Tower Ostankino Tower (russian: links=no, Останкинская телебашня, Ostankinskaya telebashnya) is a television and radio tower in Moscow, Russia, owned by the Moscow branch of unitary enterprise Russian TV and Radio Broadcasting N ...

and the

Oriental Pearl Tower The Oriental Pearl Radio & Television Tower () is a TV tower in Shanghai. Its location at the tip of Lujiazui in the Pudong New Area by the side of Huangpu River, opposite The Bund, makes it a distinct landmark in the area. Its principal de ...

are excluded from these categories because they are not "habitable buildings", which are defined as frame structures made with floors and walls throughout.

History of record holders in each
CTBUH The Council on Tall Buildings and Urban Habitat (CTBUH) is an international body in the field of tall buildings and sustainable urban design. A non-profit organization based at the Monroe Building in the city of Chicago, Illinois, United States ...
category

Tallest freestanding structures on land

Freestanding structures must not be supported by guy wires, the sea or other types of support. It therefore does not include guyed masts, partially guyed towers and drilling platforms but does include towers, skyscrapers (pinnacle height) and chimneys. ''(See also history of tallest skyscrapers.)'' The world's tallest freestanding structure on land is defined as the tallest self-supporting artificial structure that stands above ground. This definition is different from that of

world's tallest building This list of tallest buildings includes skyscrapers with continuously occupiable floors and a height of at least . Non-building structures, such as towers, are not included in this list (for these, see '' List of tallest buildings and structu ...

or world's tallest structure based on the percentage of the structure that is occupied and whether or not it is self-supporting or supported by exterior cables. Likewise, this definition does not count structures that are built underground or on the

seabed The seabed (also known as the seafloor, sea floor, ocean floor, and ocean bottom) is the bottom of the ocean. All floors of the ocean are known as 'seabeds'. The structure of the seabed of the global ocean is governed by plate tectonics. Most of ...

, such as the Petronius Platform in the

Gulf of Mexico The Gulf of Mexico ( es, Golfo de México) is an ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United S ...

. Visit world's tallest structure by category for a list of various other definitions. The tallest freestanding structure on land is the Burj Khalifa in Dubai, United Arab Emirates. The building surpassed the height of the previous record holder, the CN Tower in Toronto, Ontario, on September 12, 2007. It was completed in 2010, with final height of .

History

The following is a list of structures that have held the title as the tallest freestanding structure on land. Notable mentions include the Pharos (lighthouse) of Alexandria, built in the third century BC and estimated between . It was the world's tallest non-pyramidal structure for many centuries. Another notable mention includes the Jetavanaramaya

stupa A stupa ( sa, स्तूप, lit=heap, ) is a mound-like or hemispherical structure containing relics (such as '' śarīra'' – typically the remains of Buddhist monks or nuns) that is used as a place of meditation. In Buddhism, circumam ...

in

Anuradhapura Anuradhapura ( si, අනුරාධපුරය, translit=Anurādhapuraya; ta, அனுராதபுரம், translit=Aṉurātapuram) is a major city located in north central plain of Sri Lanka. It is the capital city of North Central P ...

, Sri Lanka, which was built in the third century, and was similarly tall at . These were both the world's tallest or second-tallest non-pyramidal structure for over a thousand years. The tallest ''secular'' building between the collapse of the Pharos and the erection of the

Washington Monument The Washington Monument is an obelisk shaped building within the National Mall in Washington, D.C., built to commemorate George Washington, once commander-in-chief of the Continental Army (1775–1784) in the American Revolutionary War and ...

may have been the Torre del Mangia in

Siena Siena ( , ; lat, Sena Iulia) is a city in Tuscany, Italy. It is the capital of the province of Siena. The city is historically linked to commercial and banking activities, having been a major banking center until the 13th and 14th centur ...

, which is tall, and was constructed in the first half of the fourteenth century, and the

Torre degli Asinelli The Two Towers ( it, Le due torri), both of them leaning, are the symbol of Bologna, Italy, and the most prominent of the Towers of Bologna. They are located at the intersection of the roads that lead to the five gates of the old ring wall (''mu ...

in

Bologna Bologna (, , ; egl, label=Emilian language, Emilian, Bulåggna ; lat, Bononia) is the capital and largest city of the Emilia-Romagna region in Northern Italy. It is the seventh most populous city in Italy with about 400,000 inhabitants and 1 ...

, also Italy, built between 1109 and 1119.

World's highest observation deck

Timeline of development of world's highest

observation deck An observation deck, observation platform, or viewing platform is an elevated sightseeing platform usually situated upon a tall architectural structure, such as a skyscraper or observation tower. Observation decks are sometimes enclose ...

since inauguration of Eiffel Tower. Higher observation decks have existed on

mountain tops A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher th ...

or cliffs, rather than on tall structures. The

Grand Canyon Skywalk The Grand Canyon Skywalk is a horseshoe-shaped cantilever bridge with a glass walkway at Eagle Point in Arizona near the Colorado River on the edge of a side canyon in the Grand Canyon West area of the main canyon.Yost, Mark.Close to the Edge ''Wa ...

, constructed in 2007, protrudes over the west rim of the Grand Canyon and is approximately above the

Colorado River The Colorado River ( es, Río Colorado) is one of the principal rivers (along with the Rio Grande) in the Southwestern United States and northern Mexico. The river drains an expansive, arid watershed that encompasses parts of seven U.S. s ...

, making it the highest of these types of structures.

Timeline of guyed structures on land

As most of the tallest structures are

guyed mast A guyed mast or guyed tower is a tall thin vertical structure that depends on guy lines (diagonal tensioned cables attached to the ground) for stability. The mast itself has the compressive strength to support its own weight, but does not h ...

s, here is a timeline of world's tallest guyed masts, since the beginning of radio technology. As many large guyed masts were destroyed at the end of World War II, the dates for the years between 1945 and 1950 may be incorrect. If Wusung Radio Tower survived World War II, it was the tallest guyed structure shortly after World War II.

Tallest towers

Towers include observation towers, monuments and other structures not generally considered to be "habitable buildings", they are meant for "regular access by humans, but not for living in or office work, and are self-supporting or freestanding, which means no guy-wires for support", meaning it excludes from this list of continuously habitable

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 funct ...

s and

skyscraper A skyscraper is a tall continuously habitable building having multiple floors. Modern sources currently define skyscrapers as being at least or in height, though there is no universally accepted definition. Skyscrapers are very tall high-ri ...

s as well as radio and TV masts.

Bridge tower A bridge tower (german: Brückenturm) was a type of fortified tower built on a bridge. They were typically built in the period up to early modern times as part of a city or town wall or castle. There is usually a tower at both ends of the bridg ...

s or pylons,

chimneys A chimney is an architectural ventilation structure made of masonry, clay or metal that isolates hot toxic exhaust gases or smoke produced by a boiler, stove, furnace, incinerator, or fireplace from human living areas. Chimneys are t ...

,

transmission tower A transmission tower, also known as an electricity pylon or simply a pylon in British English and as a hydro tower in Canadian English, is a tall structure, usually a steel lattice tower, used to support an overhead power line. In electrical ...

s, and most large

statue A statue is a free-standing sculpture in which the realistic, full-length figures of persons or animals are carved or cast in a durable material such as wood, metal or stone. Typical statues are life-sized or close to life-size; a sculpture t ...

s allow human access for maintenance, but not as part of their normal operation, and are therefore not considered to be towers. The

Tokyo Skytree is a broadcasting and observation tower in Sumida, Tokyo. It became the tallest structure in Japan in 2010second-tallest freestanding structure in the world.

History of tallest tower

The following is a list of structures that have historically held the title as the tallest towers in the world.

Tallest structures, freestanding structures, and buildings

The list categories are: *The structures (supported) list uses pinnacle height and includes architectural structures of any type that might use some external support constructions like cables and are fully built in air. Only the three tallest are listed, as more than fifty US

TV masts Radio masts and towers are typically tall structures designed to support antennas for telecommunications and broadcasting, including television. There are two main types: guyed and self-supporting structures. They are among the tallest human-mad ...

have stated heights of . *The structures (media supported) list uses pinnacle height and includes architectural structures of any type that are not totally built in the air but are using support from other, denser media like salt water. All structures greater than are listed. *The freestanding structures list uses pinnacle height and includes structures over that do not use

guy-wire A guy-wire, guy-line, guy-rope, or stay, also called simply a guy, is a tensioned cable designed to add stability to a free-standing structure. They are used commonly for ship masts, radio masts, wind turbines, utility poles, and tents. A ...

s or other external supports. This means truly free standing on its own or, in similar sense, non-supported structures. *The building list uses architectural height (excluding antennas) and includes only buildings, defined as consisting of habitable floors. Both of these follow

CTBUH The Council on Tall Buildings and Urban Habitat (CTBUH) is an international body in the field of tall buildings and sustainable urban design. A non-profit organization based at the Monroe Building in the city of Chicago, Illinois, United States ...

guidelines. All supertall buildings (450 m and higher) are listed. Notes: *Eight buildings appear on the ''freestanding structures'' category list with heights different from another category. This is due to the different measurement specifications of those lists. *Only current heights and, where reasonable, target heights are listed. Historical heights of structures that no longer exist, for example, for having collapsed, are excluded. Source
Emporis

References

External links

Tallest Buildings in the Islamic World (2017)

Collection
of many record holders o
Skyscraperpage

tallestbuildingintheworld.net

The highest abandoned skyscraper in the world
{{DEFAULTSORT:Tallest buildings and structures in the world Structures Tallest *

Debate over definition

Tallest structures

Tallest structure by category

Tallest destroyed structures by category, not surpassed by existing structures

Tallest structure by function

Tallest buildings

History of record holders in each CTBUH The Council on Tall Buildings and Urban Habitat (CTBUH) is an international body in the field of tall buildings and sustainable urban design. A non-profit organization based at the Monroe Building in the city of Chicago, Illinois, United States ... category

Tallest freestanding structures on land

History

World's highest observation deck

Timeline of guyed structures on land

Tallest towers

History of tallest tower

Tallest structures, freestanding structures, and buildings

See also

References

External links

History of record holders in each
CTBUH The Council on Tall Buildings and Urban Habitat (CTBUH) is an international body in the field of tall buildings and sustainable urban design. A non-profit organization based at the Monroe Building in the city of Chicago, Illinois, United States ...
category