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Bauhaus and its Sites in Weimar, Dessau and Bernau are
World Heritage Sites World Heritage Sites are landmarks and areas with legal protection under an international treaty administered by UNESCO for having cultural, historical, or scientific significance. The sites are judged to contain "cultural and natural heritag ...
in
Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
, comprising six separate sites which are associated with the
Bauhaus The Staatliches Bauhaus (), commonly known as the , was a German art school operational from 1919 to 1933 that combined Decorative arts, crafts and the fine arts.Oxford Dictionary of Art and Artists (Oxford: Oxford University Press, 4th edn., ...
art school. It was designated in 1996 with four initial sites, and in 2017 two further sites were added. The Bauhaus was only in operation from 1919 until 1933 and it educated no more than 1,250 students, of whom only 155 actually graduated with a Bauhaus Diploma.Arts in Exil. Objects. Konrad Püschel:List of Names
. Retrieved 24 April 2019
Knorr, Susan; Kern, Ingolf; Welzbacher, Christian (2012) ''Bauhaus Reisebuch'', Bonn: Dumont Nevertheless, the school revolutionized 20th century architectural and aesthetic thinking and practice. " hebuildings designed by the masters of the Bauhaus are fundamental representatives of Classical
Modernism Modernism was an early 20th-century movement in literature, visual arts, and music that emphasized experimentation, abstraction, and Subjectivity and objectivity (philosophy), subjective experience. Philosophy, politics, architecture, and soc ...
... For this reason, they are important monuments not only for art and culture, but also for the historic ideas of the 20th century." – ''Application for the extension of the UNESCO World Heritage Bauhaus and its Sites in Weimar and Dessau'', German delegation to
UNESCO The United Nations Educational, Scientific and Cultural Organization (UNESCO ) is a List of specialized agencies of the United Nations, specialized agency of the United Nations (UN) with the aim of promoting world peace and International secur ...
, December 2015.


Weimar


Bauhaus campus, Weimar

The Bauhaus was founded in
Weimar Weimar is a city in the state (Germany), German state of Thuringia, in Central Germany (cultural area), Central Germany between Erfurt to the west and Jena to the east, southwest of Leipzig, north of Nuremberg and west of Dresden. Together w ...
in 1919 by
Walter Gropius Walter Adolph Georg Gropius (; 18 May 1883 – 5 July 1969) was a German-born American architect and founder of the Bauhaus, Bauhaus School, who is widely regarded as one of the pioneering masters of modernist architecture. He was a founder of ...
and remained there until 1925 when it moved to
Dessau Dessau is a district of the independent city of Dessau-Roßlau in Saxony-Anhalt at the confluence of the rivers Mulde and Elbe, in the ''States of Germany, Bundesland'' (Federal State) of Saxony-Anhalt. Until 1 July 2007, it was an independent ...
due to political pressure.Bauhaus-Universität Weimar. History
Retrieved 29 December 2019
It was housed in two neighbouring buildings that had previously been two separate art schools, both designed in the
Art Nouveau Art Nouveau ( ; ; ), Jugendstil and Sezessionstil in German, is an international style of art, architecture, and applied art, especially the decorative arts. It was often inspired by natural forms such as the sinuous curves of plants and ...
style by
Henry van de Velde Henry Clemens van de Velde (; 3 April 1863 – 15 October 1957) was a Belgian painter, architect, interior designer, and art theorist. Together with Victor Horta and Paul Hankar, he is considered one of the founders of Art Nouveau in Belgium ...
. These are: * The 'Van de Velde' building, built 1905–06, for what was then the Grand-Ducal Saxon School of Arts and Crafts, a vocational arts school.Bauhaus-Universität Weimar. Van de Velde Building
Retrieved 29 December 2019
* The 'Main Building', built 1904–11, for the ''Großherzoglich Sächsische Hochschule für Bildende Kunst'' (Grand-Ducal Saxon School for Fine Arts).Bauhaus-Universität Weimar. Main Building
Retrieved 2 January 2019
The Van de Velde building has reconstructed murals by
Oskar Schlemmer Oskar Schlemmer (; 4 September 1888 – 13 April 1943) was a German painter, sculptor, designer and choreographer associated with the Bauhaus school. In 1923, he was hired as Master of Form at the Bauhaus theatre workshop, after working at the ...
, originally created for the 1923 Bauhaus exhibition, and it is noted for the unconventional lighting of its central stairwell. The Main Building was restored by the German architect Thomas van den Valentyn in 1999. It has a sinuous, elliptical Art Nouveau main staircase. Walter Gropius' former office has been refitted with reconstructed furniture, fittings, and carpets. After the Bauhaus in Weimar closed, the buildings were used by a number of successor arts-related educational institutions. Today, after various mergers, restructurings, and renamings, the present day
Bauhaus-Universität Weimar The Bauhaus-Universität Weimar is a university located in Weimar, Germany, and specializes in the artistic and technical fields. Established in 1860 as the Great Ducal Saxon Art School, it gained collegiate status on 3 June 1910. In 1919 the s ...
, founded in 1996, operates on the former Bauhaus site, teaching art, design, and technology-related courses. The site was designated a World Heritage Site in 1996. The buildings operate as a teaching facility, but tours of the exterior and interior of the site are offered by the Bauhaus University Weimar.


Haus am Horn

The Haus am Horn is a domestic house made of concrete and steel built for the first exhibition of work by the Bauhaus in 1923. The building was based on designs by Georg Muche, a painter and teacher at the school. It was the first building based entirely on Bauhaus design principles and it presented a revolutionary prototype for modern living.Klassik Stiftung Weimar. Haus am Horn
. Retrieved 24 November 2018
In keeping with the Bauhaus philosophy of learning by practical experience, a number of staff and students were involved with the project, including
Marcel Breuer Marcel Lajos Breuer ( ; 21 May 1902 – 1 July 1981) was a Hungarian-American modernist architect and furniture designer. He moved to the United States in 1937 and became a naturalized American citizen in 1944. At the Bauhaus he designed the Was ...
, who was then a student, Alma Siedhoff-Buscher and
László Moholy-Nagy László Moholy-Nagy (; ; born László Weisz; July 20, 1895 – November 24, 1946) was a Kingdom of Hungary, Hungarian painter and photographer as well as a professor in the Bauhaus school. He was highly influenced by Constructivism (art), con ...
. Every piece of furniture, including the lighting, was made in the Bauhaus workshops. It was included in the World Heritage site in 1996. Since August 2017 the building has been owned by the Klassik Stiftung Weimar. In 2018–19 the house was closed to the public for a major restoration. It was reopened on 18 May 2019.


Dessau


Bauhaus Dessau building

The Bauhaus Dessau is one of the iconic buildings of the 20th century. It was designed by Walter Gropius and was officially opened on 4 December 1926, having taken just over a year to build.Charrier, Julie (director) (2000
Architectures – Le Bauhaus de Dessau (Das Bauhaus von Dessau)
Arte Arte (, , ; ' ('), sometimes stylised in lowercase or uppercase in its logo) is a European Union, European public service Television channel, channel dedicated to culture. It is made up of three separate companies: the Strasbourg-based Europea ...
/ French ministry of culture and communication /
Centre Pompidou The Centre Pompidou (), more fully the (), also known as the Pompidou Centre in English and colloquially as Beaubourg, is a building complex in Paris, France. It was designed in the style of high-tech architecture by the architectural team of ...
. (YouTube 28 min.). Retrieved 30 December 2018
It is "regarded as a 'built manifesto' of the Bauhaus's ideas, in which the functionality and aesthetics of the design coalesce to form a single entity".Markgraf, Monika (ed.) (2017) ''Bauhaus World Heritage Site''. Leipzig: Spector Books The building was commissioned by the city of Dessau, who financed the project and provided the building plot. The plans were drafted by Gropius's architectural firm as the Bauhaus did not have its own architecture department until 1927, but the interior fittings were made in the Bauhaus workshops.Bauhaus Dessau Foundation. The Bauhaus building by Walter Gropius (1925–26)
. Retrieved 29 December 2019
Gropius was required to incorporate two schools into the building; the Bauhaus design school and a municipal vocational school. The building consists of several interconnecting wings which are positioned asymmetrically. These are: a three-storey workshop wing; a three-storey vocational school; a two-storey administration wing; an auditorium, stage and cafeteria, and a five-story studio wing. The facade is characterised by the use of non-load-bearing glass curtain walls, a further development to that used in the Fagus Factory, built 1911–1913, which Gropius and Adolf Meyer designed. Construction features such as columns and supporting
joists A joist is a horizontal structural member used in framing to span an open space, often between beams that subsequently transfer loads to vertical members. When incorporated into a floor framing system, joists serve to provide stiffness to the su ...
can be seen in the interior of the building. The five-storey studio wing, the "Prellerhaus", with 28 studio flats, each 20 m2, provided accommodation for students and junior masters. Bathroom and kitchen facilities were communal and there was a shared roof terrace. Sixteen of the studios had small balconies, whose regular symmetry characterises this wing of the building. Women lived on the first floor, the "ladies floor", whose residents included Gertrud Arndt, Marianne Brandt,
Gunta Stölzl Gunta Stölzl (5 March 1897 – 22 April 1983) was a German textile artist who played a fundamental role in the development of the Bauhaus school's weaving workshop, where she created enormous change as it transitioned from individual pictoria ...
and Anni Albers.Architectuul. Bauhaus Prellerhaus
Retrieved 30 December 2018
There were 140 students in total, so most of them had to seek accommodation in the inner city area of Dessau. In 1930,
Ludwig Mies van der Rohe Ludwig Mies van der Rohe ( ; ; born Maria Ludwig Michael Mies; March 27, 1886August 17, 1969) was a German-American architect, academic, and interior designer. He was commonly referred to as Mies, his surname. He is regarded as one of the pionee ...
, then the Bauhaus director, converted some studios into classrooms. The building was renovated in 2006 to return it to its original layout. The studios are now let as tourist accommodation. Due to political pressure, the Bauhaus Dessau closed in 1932 and Mies van der Rohe set up a privately funded Bauhaus in Berlin, although this also closed after less than a year. The Bauhaus building in Dessau was used as a school for teaching women cooking and sewing, and just before the beginning of
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
in 1939, it became a training school for officers of the
Nazi Party The Nazi Party, officially the National Socialist German Workers' Party ( or NSDAP), was a far-right politics, far-right political party in Germany active between 1920 and 1945 that created and supported the ideology of Nazism. Its precursor ...
. In 1941 it housed the press department of the aircraft manufacturer
Junkers Junkers Flugzeug- und Motorenwerke AG (JFM, earlier JCO or JKO in World War I, English language, English: Junkers Aircraft and Motor Works) more commonly Junkers , was a major German aircraft manufacturer, aircraft and aircraft engine manufactu ...
. In 1945 the school was damaged in an air raid. After the war it was partially repaired to make it usable as an educational institution, but without respect to the integrity of the building. It was not until 1972 that the
East German East Germany, officially known as the German Democratic Republic (GDR), was a country in Central Europe from its formation on 7 October 1949 until its reunification with West Germany (FRG) on 3 October 1990. Until 1989, it was generally vie ...
government had the building listed as an historical monument. It underwent a restoration, led by Konrad Püschel, an architect who had trained at the Bauhaus. The glass curtain walling, auditorium, stage and cafeteria were restored. On 2 December 1976, 50 years after it first opened, the building was officially reopened for use as a science and culture centre, which included a collection of items from Bauhaus. Eighteen former Bauhaus students attended the ceremony.
Bauhaus Dessau Foundation The Bauhaus Dessau Foundation is a nonprofit organization devoted to research and teaching in the field of experimental design. It was founded by the German Federal Government in 1994 and is based in the Bauhaus Dessau building in the state o ...
was founded in 1994 to research and preserve the heritage of the Bauhaus. The building was inscribed as part of the World Heritage site in 1996, after which extensive renovations were carried out. These were completed in 2006. Today the north wing of the complex, where the vocational school was, is used by the Anhalt University of Applied Sciences, whose Dessau campus is next to the Bauhaus site. The Bauhaus Dessau Foundation uses the rest of the building for its administration; housing a museum, a shop and the restored cafeteria; letting out the former student rooms as tourist accommodation; and hiring out other areas of the building, such as the auditorium, for seminars and conventions.


Meisterhäuser

The ''Meisterhäuser'' (Masters' houses) are a group of seven flat-roofed, cubic modernist houses about 600 metres from the Bauhaus Dessau building, designed by Walter Gropius for the senior staff of the Bauhaus. They were built in 1925–26 on commission from city of Dessau. They consisted of three pairs of
semi-detached A semi-detached house (often abbreviated to semi) is a single-family Duplex (building), duplex dwelling that shares one common party wall, wall with its neighbour. The name distinguishes this style of construction from detached houses, with no sh ...
houses, and a detached house at the end of the row for Gropius, the school director.Bauhaus Dessau. Masters' houses by Walter Gropius (1925–26)
Retrieved 29 December 2018
The houses were built within a small pine wood, with the aim of respecting the character of the landscape. The houses were spacious; the detached director's house was 350 m2, and others were over 250 m2. They had terraces and studios, as the artist-teachers were expected to work from home as well as on the school premises. In each semi-detached pair, the houses have the same layout, but they are turned at a 90 degree angle from each other, so they do not look symmetrical from the street.Lorch, Catrin (8 August 2019) "Gemälde in drei Dimensionen" in ''
Süddeutsche Zeitung The ''Süddeutsche Zeitung'' (; ), published in Munich, Bavaria, is one of the largest and most influential daily newspapers in Germany. The tone of ''SZ'' is mainly described as centre-left, liberal, social-liberal, progressive-liberal, and ...
'' (Feuillteton, p.9)
Along with their families, the original residents were:
Lyonel Feininger Lyonel Charles Adrian Feininger (; July 17, 1871January 13, 1956) was a German-American painter, and a leading exponent of Expressionism. He also worked as a caricaturist and comic strip artist. He was born and grew up in New York City. In 1887 h ...
and
László Moholy-Nagy László Moholy-Nagy (; ; born László Weisz; July 20, 1895 – November 24, 1946) was a Kingdom of Hungary, Hungarian painter and photographer as well as a professor in the Bauhaus school. He was highly influenced by Constructivism (art), con ...
who lived next door to Gropius (although Feininger never taught at the Bauhaus in Dessau);
Oskar Schlemmer Oskar Schlemmer (; 4 September 1888 – 13 April 1943) was a German painter, sculptor, designer and choreographer associated with the Bauhaus school. In 1923, he was hired as Master of Form at the Bauhaus theatre workshop, after working at the ...
and Georg Muche lived in the next pair of houses;
Wassily Kandinsky Wassily Wassilyevich Kandinsky ( – 13 December 1944) was a Russian painter and art theorist. Kandinsky is generally credited as one of the pioneers of abstract art, abstraction in western art. Born in Moscow, he spent his childhood in ...
and
Paul Klee Paul Klee (; 18 December 1879 – 29 June 1940) was a Swiss-born German artist. His highly individual style was influenced by movements in art that included expressionism, cubism, and surrealism. Klee was a natural draftsman who experimented wi ...
lived in the last pair. Gropius and Maholy-Nagy fitted out their houses entirely with furniture designed by Marcel Breuer. Later residents included
Hannes Meyer Hans Emil "Hannes" Meyer (18 November 1889 – 19 July 1954) was a Swiss architect and second director of the Bauhaus Dessau from 1928 to 1930. Early life Meyer was born in Basel, Switzerland, trained as a mason, and practiced as an architect ...
,
Ludwig Mies van der Rohe Ludwig Mies van der Rohe ( ; ; born Maria Ludwig Michael Mies; March 27, 1886August 17, 1969) was a German-American architect, academic, and interior designer. He was commonly referred to as Mies, his surname. He is regarded as one of the pionee ...
, Josef and Anni Albers, Hinnerk Scheper and
Alfred Alfred may refer to: Arts and entertainment *''Alfred J. Kwak'', Dutch-German-Japanese anime television series * ''Alfred'' (Arne opera), a 1740 masque by Thomas Arne * ''Alfred'' (Dvořák), an 1870 opera by Antonín Dvořák *"Alfred (Interlu ...
and Gertrud Arndt. From 1932, when the Bauhaus in Dessau closed, the houses were rented out to other tenants. In 1945, towards the end of
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, the director's house and one wing of the neighbouring house, where Maholy-Nagy had lived, were destroyed in an air raid. In 1948 a standard suburban house was built on the site of the director's house. The other houses were occupied, but they were altered and eventually fell into considerable disrepair. The Meisterhäuser were restored in 1992 and added to the World Heritage site in 1996. The house built on the site of the director's house was pulled down in 2011. In 2014, in order to restore the original rhythm and form of the whole Meisterhäuser ensemble, structures which represent the form of the former director's house and the Maholy-Nagy house were built on sites of the destroyed buildings. These were designed by the architectural firm Bruno Fioretti Marquez, with the interior layout by the artist Olaf Nicolai. The interiors of these structures are used as exhibition spaces, with information about the history of the site. These and the other houses, which are open to the public, are managed by the Bauhaus Dessau Foundation. The Feininger house is the base of the Kurt Weill Centre, which promotes the work of the composer
Kurt Weill Kurt Julian Weill (; ; March 2, 1900April 3, 1950) was a German-born American composer active from the 1920s in his native country, and in his later years in the United States. He was a leading composer for the stage who was best known for hi ...
, who came from Dessau. In 1932 the , a refreshment kiosk, designed by Mies van der Rohe, was built on the corner of the director's house site and was integrated into a two-metre wall surrounding the property. It survived the war but was pulled down in 1962. In 2014 the wall and the kiosk were rebuilt and from 2016 it resumed its former function selling drinks and snacks to the public. From 2016 to 2019 the Kandinsky/Klee houses were closed for a major restoration carried out by the , to completely restore the interior of the houses, with a particular focus on recreating the original colour schemes. They were reopened on 17 April 2019. The restoration cost about 1.5 million Euros and involved detailed scientific analysis of traces of original paints. Over 100 colours were recreated.


Laubenganghäuser

The ('Houses with Balcony Access') are five blocks of apartment buildings, providing a total of 90 flats, in south Dessau which were built in 1930. They were designed by Hannes Meyer, who was then director of the Bauhaus.Wohnungsgenossenschaft Dessau. Laubenganghäuser – UNESCO Welterbestätte Bauhaus
Retrieved 29 December 2018
They were built as
social housing Public housing, also known as social housing, refers to Subsidized housing, subsidized or affordable housing provided in buildings that are usually owned and managed by local government, central government, nonprofit organizations or a ...
, with each apartment expected to house a family of up to four people, following Meyer's motto ("People's needs rather than luxury consumption").Dr. Helga Huskamp (ed.) (2017
Bauhaus Dessau. Talks. Houses with Balcony Access.
Film 7:30 min. Retrieved 29 December 2018
A key part of the design was to use all materials sparingly to save costs and to design the interiors to utilise the small space as effectively as possible. Even the door handles were designed so as to use a minimum amount of metal. The balconies were intended not only to provide economical and space saving access to the apartments, but to also facilitate social interaction between residents. The apartments all had central heating and bathrooms with
terrazzo Terrazzo is a composite material, poured in place or precast, which is used for floor and wall treatments. It consists of chips of marble, quartz, granite, glass, or other suitable material, poured with a cementitious binder (for chemical bind ...
flooring and enamel baths, and were considered well appointed for social housing of the time. The apartments were built for the , a
housing cooperative A housing cooperative, or housing co-op, is a legal entity which owns real estate consisting of one or more residential buildings. The entity is usually a cooperative or a corporation and constitutes a form of housing tenure. Typically hou ...
. It ordered the work at the beginning of 1930 and all five buildings were already finished by August of the same year. The construction costs were RM 8,000 per apartment. Although the co-operative wanted the apartments to be inexpensive, it also wanted them to be well equipped and reasonably comfortable. The rent was to be controlled so that it was no more than a quarter of the occupant's income. All five apartment blocks still exist and they are still used as social housing. They were restored in the mid-1990s under historic protection criteria. Today they are owned and managed by the housing cooperative . One apartment is restored to its original design and is open to the public. The were inscribed as part of the World Heritage Site in July 2017.


Bernau

The
ADGB Trade Union School The ADGB Trade Union School (''Bundesschule des Allgemeinen Deutschen Gewerkschaftsbundes'' (ADGB)), is a training centre complex in Bernau bei Berlin, Germany. It was built for the former General German Trade Union Federation, from 1928 to 1930. ...
in
Bernau bei Berlin Bernau bei Berlin (English ''Bernau by Berlin'', commonly named Bernau) is a town in the Barnim district in Brandenburg in eastern Germany, located about northeast of Berlin. History Archaeological excavations of Mesolithic-era sites indicate th ...
is a training centre campus built 1928–1930. It was designed by
Hannes Meyer Hans Emil "Hannes" Meyer (18 November 1889 – 19 July 1954) was a Swiss architect and second director of the Bauhaus Dessau from 1928 to 1930. Early life Meyer was born in Basel, Switzerland, trained as a mason, and practiced as an architect ...
and Hans Wittwer in collaboration with Bauhaus students. It was constructed for the former Federation of German Trade Unions and it included seminar rooms, a dining hall, accommodation for trainees and teachers, sports facilities, and a library.Stiftung Baudenkmal Bundesschule Bernau. Bedeutung
. Retrieved 23 November 2018
It is a textbook example of Bauhaus
functionalist architecture In architecture, functionalism is the principle that buildings should be designed based solely on their purpose and function. An international functionalist architecture movement emerged in the wake of World War I, as part of the wave of Modernis ...
, both in the finished product and in the analytical and collaborative approach used develop the design and complete the project. Next to the Bauhaus Dessau building, it was the second largest project ever undertaken by the Bauhaus.Architectuul: ''ADGB trade union school''
(2013). Retrieved 27 October 2016
Bauhaus100. The “School in the Woods” as a Socio-pedagogical Ideal
Retrieved 17 April 2019
It was designed to harmonise with the wooded, sloping site it occupies. The architectural historian Winfried Nerdinger described it as a "masterpiece of poetic functionalism". The school opened on 4 May 1930. It could accommodate 120 trainees.
. Retrieved 23 November 2018
The complex has had various uses, including being the Reich Leadership School, where elite members of the
Gestapo The (, ), Syllabic abbreviation, abbreviated Gestapo (), was the official secret police of Nazi Germany and in German-occupied Europe. The force was created by Hermann Göring in 1933 by combining the various political police agencies of F ...
and SS were trained from 1933 until the end of World War II. It was restored between 2005 and 2007, and since then it has been used as an education centre by the ''Handwerkskammer Berlin'' (Berlin Chamber of Skilled Crafts). In 2008 the architects Brenne Gesellschaft von Architekten won the
World Monuments Fund World Monuments Fund (WMF) is a private, international, non-profit organization dedicated to the preservation of historic architecture and cultural heritage sites around the world through fieldwork, advocacy, grantmaking, education, and training ...
/ Knoll Modernism prize for the restoration. ADGB Trade Union School was inscribed as part of the World Heritage Site in July 2017. The complex is not open to the general public, but the Stiftung Baudenkmal Bundeschule Bernau runs guided tours of the school in German.Führung im UNESCO-Welterbe Bauhaus Denkmal Bundesschule Bernau
. Retrieved 28 April 2019.


Further reading

* Markgraf, Monika (ed.) (2017) ''Bauhaus World Heritage Site'' (English edition). Leipzig: Spector Books * Kern, Ingolf, et al. (2017) ''Bauhaus Travel Book: Weimar Dessau Berlin''. Munich: Prestel


See also

*
List of World Heritage Sites in Germany The United Nations Educational, Scientific and Cultural Organization (UNESCO) designates World Heritage Sites of outstanding universal value to cultural heritage, cultural or natural heritage which have been nominated by countries signatories ...


References


External links


Bauhaus Dessau Foundation. World Heritage Site Bauhaus

UNESCO.Bauhaus and its Sites in Weimar, Dessau and Bernau

Stiftung Bauhaus Dessau. UNESCO-Welterbestätte Bauhaus – Laubenganghäuser in Dessau
YouTube video (7:30 min.) (German with English subtitles) {{DEFAULTSORT:Bauhaus and its sites in Weimar, Dessau and Bernau Bauhaus Architecture in Germany 1920s architecture 1930s architecture Modernist architecture in Germany World Heritage Sites in Germany Tourist attractions in Germany Restored and conserved buildings Walter Gropius buildings Hannes Meyer buildings