The Châteaux de Lastours (in Occitan Lastors) are four so-called Cathar castles in the French commune of Lastours in the département of l'Aude. The four castles are on a rocky spur above the village of Lastours, isolated by the deep valleys of the Orbeil and Grésilhou rivers. They were built at an altitude of 300 m along a rock wall just 1300 feet (~400 m) long by 165 feet (~50 m) wide. Cabaret, Surdespine and la Tour Régine stand in line, while Quertinheux is built on a separate pinnacle close by.