A composite building: the original early Gothic 13C church of a nave and two aisles has a later section on the valley side, its Flamboyant style windows dating it to the 15C, plus a confraternity chapel on the north side. In the 16C a huge Renaissance chancel with ambulatory was added at the east end; its exterior overhangs the Hautil road atop 6 steps. Don’t miss the16C stained glass, notably in the ambulatory.