Hôtel Camondo, 63, rue de Monceau, Paris, France

"The mansion was built in 1911 by the Comte Moïse de Camondo, a banker, with architect René Sergent, to set off his collection of eighteenth-century French furniture and art objects. Its design was patterned upon the Petit Trianon at Versailles, though with modern conveniences. Both house and collections were bequeathed to Les Arts Décoratifs in honor of his son, Nissim de Camondo, killed in World War I, and opened as a museum in 1935. More tragedy followed when a few years later Moise’s daughter and her family were deported to Auschwitz where they died.

Today the house is maintained as if it were still a private home preserved in its original condition."