The castle stands on an isolated mound between the Fier and its former bed, known as the "Grande Fosse". Built between the 13C and 16C, it is a fine specimen of Savoyard military architecture; a 36m/118ft-tall round keep towers over it. The castle houses important collections, bequeathed, along with the castle itself, to the Académie Florimontane by Léon Marès: weapons, armoury, earthenware, porcelain, Far Eastern ceramics, antique furniture and four 16C bronze reliefs by Nuremberg artists, Peter and Hans Vischer.