The Palais Clam-Gallas is a historic palace in the Neo-Classical or Biedermeier style in Vienna, Austria. It was built as a summer residence in the mid 1830s by Franz Joseph, Prince of Dietrichstein.
The building was constructed as a summertime Lustschloss (pleasure palace) in 1834 or 1835 for Franz Joseph, Prince of Dietrichstein. It was built in a park â laid out as an English garden â which had belonged to his family since 1690.
The palace's architect was . The building is in a Neo-Classical style typical of the Biedermeier period. It passed by marriage into the family in 1850.
Following the Second World War, it was used by American troops. The Clam-Gallas family sold it to the Republic of France in 1952.
The Lycée Français de Vienne was built on a part of the grounds in 1954. The palace housed the Institut français de Vienne (the French institute in Vienna) from 1980 until 2015, when the property was sold.