Built in the 11th century and rebuilt in the 12th century, this building is exceptionally oriented north-south. The church is remarkable for its 35-metre-high rectangular bell tower. It has three naves with a faint transept. The powerful shaped columns support the semi-circular arches. The central vault, also built in round arches, collapsed. It was rebuilt in the 12th century with a higher pointed arch. As a result, the window under the bell tower looks into the nave and no longer lights the choir.