Which site was the heritage designation of Stoclet Palace from Mar 1976 to 2009?
Stoclet Palace The Stoclet Palace ( , ) is a mansion in Brussels , Belgium . It was designed by Austrian architect Josef Hoffmann for Belgian financier Adolphe Stoclet . Built between 1905 and 1911 in the Vienna Secession style , it is located on Avenue de Tervueren in the Woluwe-Saint-Pierre municipality of Brussels . Considered Hoffmans masterpiece , the residence is one of the most refined and luxurious private houses of the twentieth century . The sumptuous dining and music rooms of the Stoclet Palace exemplified the theatrical spaces of the Gesamtkunstwerk ( total work of art ) , celebrating sight , sound , and taste in a symphony of sensual harmonies that paralleled the operas of Richard Wagner , from whom the concept originated . In his designs for the Stoclet Palace , Hoffmann was particularly attuned to fashion and to the Viennese identity of the new style of interior , even designing a dress for Madame Stoclet so that she would not clash with her living room decor as she had while wearing a French Paul Poiret gown . The mansion is still occupied by the Stoclet family and is not open to visitors . The building has received protected status by the Monuments and Sites Directorate of the Brussels-Capital Region , and it was designated as a World Heritage Site by UNESCO in June 2009 . Description . The Stoclet Palace was commissioned by Adolphe Stoclet ( 1871–1949 ) , a wealthy Belgian financier and art collector . He chose 35-year-old Austrian architect Josef Hoffmann ( 1870–1956 ) , who was a founding member of the Vienna Secession , a radical group of designers and artists established in 1897 . Hoffman abandoned fashions and styles of the past and produced a building that is an asymmetrical compilation of rectangular blocks , underlined by exaggerated lines and corners . The starkness of the exterior is softened by artistic windows , which break through the line of the eaves , the rooftop conservatory , and bronze sculptures of four nude males by Franz Metzner , which are mounted on the tower that rises above the stairwell . Regimented upright balustrades line the balconies , touched with Art Nouveau ornamentation . The Stoclet Palace was the first residential project for the Wiener Werkstätte ( Vienna Workshops ) , co-founded by Hoffman in 1903 . Josef Hoffman and his colleagues designed every aspect of the mansion , down to the door handles and light fittings . The interior is as spartan as the exterior , with upright geometric furniture and minimal clutter . This was an avant-garde approach , presenting a reformed interior where function dictated form . The interior of the building is decorated with marble paneling and artworks , including mosaic friezes by Gustav Klimt ( designed by Klimt and carried out by Leopold Forstner ) and murals by Ludwig Heinrich Jungnickel . The integration of architects , artists , and artisans makes Stoclet Palace an example of a Gesamtkunstwerk , one of the defining characteristics of Art Nouveau . Klimts sketches for the dining room are in the permanent collection of the Museum für angewandte Kunst ( MAK ) in Vienna . The Stoclet Palace is on Avenue de Tervueren/Tervurenlaan in the municipality of Woluwe-Saint-Pierre in Brussels . The building was designed to appear from the road as a stately city mansion . Seen from the garden at the back the Stoclet Palace becomes a villa suburbana with its rear facade sculpturally modelled by bay windows , balconies and terraces in the words of architectural historian Annette Freytag , which gave the Stoclet family a building with all the advantages of a comfortable urban mansion and a country house at the same time . Adolphe Stoclet died in 1949 , and the mansion was inherited by his daughter-in-law Annie Stoclet . Following Annies death in 2002 , the house was inherited by her four daughters . The Stoclet Palace is currently not open to the public . Press reports have described the mansion as being looked after by two caretakers while there is dissension between Stoclets four granddaughters as to the future of the Stoclet Palace .