Map - Stoclet Palace (Palais Stoclet)

The Stoclet Palace (Palais Stoclet, ; Stocletpaleis, ) is a mansion in Brussels, Belgium. It was designed by the Austrian architect Josef Hoffmann for the Belgian financier Adolphe Stoclet. Built between 1905 and 1911 in the Vienna Secession style, it is located at 279–281, Avenue de Tervueren/Tervurenlaan, in the Woluwe-Saint-Pierre municipality of Brussels. Considered Hoffman's masterpiece, the residence is one of the 20th century's most refined and luxurious private houses.

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 owned by the Stoclet family and is not open to visitors. Until recently no outsider, not even experts helping with restoration were allowed in. 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.

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 austere and at the same time detailed as the exterior, with upright geometrically coordinated 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 large mosaic friezes by painter Gustav Klimt (designed by him and implemented on location 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. Klimt's sketches for the dining room are in the permanent collection of the Museum für angewandte Kunst (MAK) in Vienna.

The Stoclet Palace is located at 279–281, 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 Annie's death in 2002, the house was inherited by her four daughters. The Stoclet Palace has never been open to the public. Press reports have described the mansion as being looked after by two caretakers while there is dissension between Stoclet's four granddaughters as to the future of the Stoclet Palace.