The partially ruined Château de Castelnaud is a true rival to Beynac in terms of impregnability – although it was successfully captured by the bellicose Simon de Montfort as early as 1214. The English held it for much of the Hundred Years’ War, and it wasn’t until the Revolution that it was finally abandoned. Fairly heavily restored in recent years, it now houses a highly informative museum of medieval warfare. Its core is an extensive collection of original weaponry, including all sorts of bizarre contraptions, and a fine assortment of armour.