The edifice is dominated by two bell-towers, the most impressive of which is the Renaissance-style tower, crowned with a lantern dome. The other Cornouaille-style bell-tower sports a Gothic spire linked to the small corner turret by an overhead gallery. The nave of the church has a remarkable panelled vaulted ceiling (16C). Its ribs and sablières are painted with mythical or religious figures. Notice the 16C stained-glass depiction of the Passion in the centre of the east wall.