Many golden ornaments are disposed on the roofs of the abbey and on its spire. Composed of copper, because it is lighter for structures, they are gilded by hand according to a secular tradition. The pinnacles raise their mineral blooms to the sky and the blue tiles of Travassac light up silver reflections. They replace those of Couesnon. Here, everything is detail, beauty and the know-how of the men who wanted this crazy achievement in the face of the elements.