Quéribus was the site of the Cathars’ last stand in 1255. It’s 728m up on a rocky hill, and its structure is well preserved: the salle du pilier inside the central keep still features Gothic pillars, vaulting and archways. There’s a mind-blowing view stretching to the Mediterranean and Pyrenees from the top. In the theatre, a short film documents the castle’s history, seen through the eyes of one of its curates. It’s 14km west of Tuchan via the D14.