the castle has a trapezoidal plan flanked by four towers, representing two periods of construction, the middle ages and the 16th century. during the 16th century, it was redeveloped and finally ruined. during the french revolution, it was sold as national property. it appears to have been used as a stone quarry. neighbouring buildings and the outer fortifications survive only as foundations. the castle is notable for the belzunce family. (françois de belzunce was bishop of marseille at the beginning of the 18th century and the marseille district of belsunce was named by him.)