A Gothic building constructed between the 13C and 16C with a beautiful Flamboyant façade. Around the ambulatory is a magnificent ensemble of stained-glass medallion windows in which blues and reds predominate. The Romanesque crypt, all that remains of the original Romanesque cathedral, houses some famous frescoes from the 11C to 13C. The Treasury collection includes an Entombment attributed to Penni and painted on slate, champlevé enamels, Books of Hours, miniatures and ivory triptychs.