Château-Musée was a fortress built in 1301 by Rainier Grimaldi I, a lord of Monaco and a French admiral (his portrait is in the museum). In the early 17th century, the castle was converted into a gracious Louis XIII château, which now contains two museums. The Museum of the Olive Tree shows the steps involved in cultivating and processing the olive. The Museum of Mediterranean Modern Art displays works by Kisling, Carzou, Dufy, Cocteau, and Seyssaud, plus temporary exhibits. In one salon is an interesting trompe l’oeil fresco, La Chute de Phaeton. The tower affords a view of the Côte d’Azur.