Having made a fortune in his business ventures, in 1914 Count Moïse de Camondo built a mansion in the style of the Petit Trianon at Versailles and furnished it with rare examples of 18th-century furniture, paintings, and art objects (like a series of six Aubusson tapestries illustrating the fables of La Fontaine and a pair of bronze vases covered with petrified wood that once belonged to Marie Antoinette). After the count’s death in 1935, the house and everything in it was left to the state as a museum, named after the count’s son, who was killed fighting in World War I. The family’s troubles did not stop there—in 1945, the count’s daughter and her family were deported and died at Auschwitz. This little-visited museum is a delight. The count’s will stipulated that the house be left exactly “as is” when it was transformed into a museum; as a result, you can wander through a fully equipped kitchen, a gigantic tiled bathroom, and salons filled with gilded mirrors, inlaid tables, and Beauvais tapestries—all in the same configuration as when Camondo lived there. Be sure to pick up a free English audioguide. Tickets can be combined with the Musée des Arts Décoratifs (13€).