Cathédrale St-André
This may not be one of France's finer Gothic cathedrals, but the intricate 14th-century chancel makes an interesting contrast with the earlier nave. Excellent stone carvings adorn the facade of the hefty edifice. You can also climb the 15th-century, 160-foot Tour Pey-Berland for a stunning view of the city; tickets must be purchased in advance online.