The castles of Queribus and Peyrepertuse were built in the mountainous areas that once marked the border between France and Aragon. Both fortresses still command respect today, and climbing to the peak of Peyrepertuse through narrow and winding gorges is quite a challenge. However, Queribus, located on a 700 m high rock ledge, was the place of the last resistance of the Cathars. From both peaks I had the pleasure of admiring the picturesque panorama of the area.