Built in the 12C and 13C, the successor of an elegant square-built church built on the site where St Martin died in 397, the collegiate church has a façade that combines military architecture and refined decoration. Inside, the Angevin vaults rest on slender piles, forming a luminous ensemble which exudes a real sense of levity. To the right of the church, a small path (15min walk there and back) leads to the top of the hillside: the lovely panorama will reward your efforts.