A crystal chandelier hangs beneath a nineteen meter dome weighing more than nine tonnes in Yugoslavia saloon inside the The Palata Srbija building, Belgrade, Serbia, July 1, 2019. The Palata Srbija building hosted former world leaders. "It is a shame to keep such a master piece away from the eyes of the public," said Sandra Tesla, curator of the building. REUTERS/Marko Djurica

A staircase stands within The Great Hall inside The Palata Srbija building in Belgrade, Serbia, July 1, 2019. The Palata Srbija building hosted former world leaders. Each of the former Yugoslav republics had its own salon with a central room called the hall of Yugoslavia. "It is a shame to keep such a master piece away from the eyes of the public," said Sandra Tesla, curator of the building. REUTERS/Marko Djurica

A dated Volkswagen Golf car drives past Blok 61 in an apartment neighbourhood in New Belgrade, Serbia, March 1, 2019. Brutalism, an architectural style popular in the 1950s and 1960s, based on crude, block-like forms cast from concrete was popular throughout the eastern bloc. REUTERS/Marko Djurica

Laundry hangs out to dry inside the Block 23, apartment neighbourhood in Belgrade, Serbia, July 31, 2019. REUTERS/Marko Djurica Laundry hangs out to dry outside of Block 23 in an apartment neighbourhood in New Belgrade, Serbia, July 31, 2019. Brutalism, an architectural style popular in the 1950s and 1960s, based on crude, block-like forms cast from concrete was popular throughout the eastern bloc. After World War Two socialist Yugoslavia led by Josip Broz Tito set out to reconstruct a land destroyed by fighting. Residential blocks, hotels, civic centres and monuments all made of concrete shot up across the country. The architecture was supposed to show the power of a state between two worlds - Western democracy and the communist East, looking to forge its own path and create a socialist utopia. REUTERS/Marko Djurica

A security worker walks inside Hall 1 of the Belgrade Fair in Belgrade, Serbia, July 25, 2019. REUTERS/Marko Djurica

Genex Tower, also known as The Western City gate, stands in Belgrade, Serbia, March 1, 2019. The building consists of two soaring pillars, connected by an aerial bridge. The tower is one of the most significant examples of brutalism, an architectural style popular in the 1950s and 1960s, based on crude, block-like forms cast from concrete. "Genex tower is among the most interesting sight. People see it on their way from the airport and it immediately draws their attention," said Vojin Muncin, manager of the Yugotour sightseeing agency which guides tourists around the Serbian capital. REUTERS/Marko Djurica

Windows face out of the building, known as the "TV building", on Block 28 neighbourhood in New Belgrade, Serbia, March 5, 2019. Brutalism, an architectural style popular in the 1950s and 1960s, based on crude, block-like forms cast from concrete was popular throughout the eastern bloc. REUTERS/Marko Djurica

A carpet lies inside the Serbia saloon, in The Palata Srbija building in Belgrade, Serbia, July 1, 2019. The Palata Srbija building hosted former world leaders. Each of the former Yugoslav republics had its own salon with a central room called the hall of Yugoslavia. Furniture and carpets were custom made and some of the most prominent artists produced paintings and mosaics. "It is a shame to keep such a master piece away from the eyes of the public," said Sandra Tesla, curator of the building. REUTERS/Marko Djurica

Miodrag Zivkovic, 91, architect of the "Battle of Sutjeska" memorial monument, poses for a picture with the original maquette in his home in Belgrade, Serbia, February 27, 2019. Zivkovic, the sculptor of the 19 metre-high concrete Tjentiste memorial was among the first artists in the former Yugoslavia to use concrete. "It is stable material, resembling stone but it is easier to work with," he said. "For every project back in those days there was a national contest, and artists from all over the country had the opportunity to apply, and that competition produced quality." REUTERS/Marko Djurica

Chairs line up inside the Yugoslavia Saloon, inside The Palata Srbija building in Belgrade, Serbia, July 1, 2019. The Palata Srbija building hosted former world leaders. Each of the former Yugoslav republics had its own salon with a central room called the hall of Yugoslavia. Furniture and carpets were custom made and some of the most prominent artists produced paintings and mosaics. "It is a shame to keep such a master piece away from the eyes of the public," said Sandra Tesla, curator of the building. REUTERS/Marko Djurica

Karaburma Housing Tower, also known as the "Toblerone" building, stands in the Karaburma district in Belgrade, Serbia, March 5, 2019. Brutalism, an architectural style popular in the 1950s and 1960s, based on crude, block-like forms cast from concrete was popular throughout the eastern bloc. REUTERS/Marko Djurica

A couple walks in front of the war memorial monument "Battle of Sutjeska" in Tjentiste, Bosnia and Herzegovina, June 16, 2019. Examples of Yugoslav brutalism include the huge memorials commemorating the struggle against fascism, often placed in dramatic rural settings. Many of those pieces of art remain in disrepair, however, the Tjentiste memorial, commemorating the killing of 7,000 people by the Nazis was renovated last year. REUTERS/Marko Djurica

A formally used Yugoslav passenger aircraft sits in front of the Aeronautical Museum in Belgrade, Serbia, March 5, 2019. After World War Two socialist Yugoslavia led by Josip Broz Tito set out to reconstruct a land destroyed by fighting. Residential blocks, hotels, civic centres and monuments all made of concrete shot up across the country. REUTERS/Marko Djurica

A chandelier hangs from the top of the Croatia saloon inside The Palata Srbija building in Belgrade, Serbia, July 1, 2019. The Palata Srbija building hosted former world leaders. Each of the former Yugoslav republics had its own salon with a central room called the hall of Yugoslavia. "It is a shame to keep such a master piece away from the eyes of the public," said Sandra Tesla, curator of the building. REUTERS/Marko Djurica

Clinical Hospital Dubrava stands in Zagreb, Croatia, February 25, 2019. REUTERS/Marko Djurica

Garage doors are seen outside Block 23 in an apartment neighbourhood in New Belgrade, Serbia, July 31, 2019. After World War Two socialist Yugoslavia led by Josip Broz Tito set out to reconstruct a land destroyed by fighting. Residential blocks, hotels, civic centres and monuments all made of concrete shot up across the country. REUTERS/Marko Djurica

A man jogs on a treadmill inside the Milan Gale Muskatirovic Sports Centre in Belgrade, Serbia, July 22, 2019. After World War Two socialist Yugoslavia led by Josip Broz Tito set out to reconstruct a land destroyed by fighting. Residential blocks, hotels, civic centres and monuments all made of concrete shot up across the country. REUTERS/Marko Djurica

A door leads into the Yugoslavia saloon, inside The Palata Srbija building in Belgrade, Serbia, July 1, 2019. The Palata Srbija building hosted former world leaders. Each of the former Yugoslav republics had its own salon with a central room called the hall of Yugoslavia. "It is a shame to keep such a master piece away from the eyes of the public," said Sandra Tesla, curator of the building. REUTERS/Marko Djurica

A staircase is seen inside the Block 11, apartment neighbourhood in Belgrade, Serbia, July 31, 2019. REUTERS/Marko Djurica

The Monument to the Uprising of the People of Kordun and Banija stands in Petrova Gora, Croatia, February 26, 2019. Examples of Yugoslav brutalism include the huge memorials commemorating the struggle against fascism, often placed in dramatic rural settings. Many of those pieces of art remain in disrepair, such as The Monument to the Uprising of the People of Kordun and Banija. REUTERS/Marko Djurica

The Museum of Contemporary Art stands in Belgrade, Serbia, July 22, 2019. After World War Two socialist Yugoslavia led by Josip Broz Tito set out to reconstruct a land destroyed by fighting. Residential blocks, hotels, civic centres and monuments all made of concrete shot up across the country. REUTERS/Marko Djurica