Villa Ephrussi de Rothschild is in Saint-Jean-Cap-Ferrat on the French Riviera.
The villa was designed by the French architect Aaron Messiah, and constructed between 1905 and 1912 by Baroness Béatrice de Rothschild. It now belongs to the Institut de France and is open to the public.
The interior is about what you would expect.
The art collection includes lots of Sèvres porcelain, Meissen figurines, Rococo paintings, and the like, but they do also have this wonderful Gothic room.