The Château Grimaldi at Cagnes-sur-Mer is built on the site of an earlier fortress occupied by the Greeks and then the Romans. The present castle was built in 1309 by Rainier Grimaldi (Lord of Cagnes and an admiral of France) - a distant ancestor of the present ruling house of Monaco. Later it became the residence of the Governors of the province. Following the French Revolution, it was used as barracks and later as a hospital. Now owned by the city of Cagnes, it is known as le Château Musée Grimaldi.
Built upon a hilltop, the castle towers over the town. Constructed in the local stone, it retains many of its original medieval features and motifs, it is machicolated with crenelations surmounting its towers and keep. The castle is built around a triangular courtyard. During the reign of Louis XIII (1610 to 1643) the castle was altered, and the principal rooms made more comfortable and redecorated in the contemporary taste. The great hall has a painted ceiling depicting the Fall of Phaëton, completed in the 1620s by the Genovese painter Giulio Benso, while the chapel has a ceiling painted with folk scenes.
Today the castle is an exhibition centre for contemporary art from around the world, and a museum of modern art.
References:The Citadelle of Quebec is an active military installation and official residence of both the Canadian monarch and the Governor General of Canada. It is located atop Cap Diamant, adjoining the Plains of Abraham in Quebec City. The citadel is the oldest military building in Canada, and forms part of the fortifications of Quebec City, which is one of only two cities in North America still surrounded by fortifications, the other being Campeche, Mexico.
The first fortifications in Quebec were built by the Governor General of New France Louis de Buade, and completed just in time for the Battle of Quebec in 1690.
After the British conquest in the second half of the 18th century, the problem of Quebec City's defences grew more acute.