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:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.