According to tradition this church was built in 743, although the current church was rebuilt in a Romanesque form in the 11th Century and was renovated in the 16th Century. A fortified passage leads to the square which faces the Abbey. The façade is tall and narrow and is flanked by two bell towers (the one on the right is incomplete). The interior has a single nave in a Latin cross shape with an elevated presbytery, characterised by an arch decorated with figures of saints and evangelists. The crypt has particular importance; it is probably from the 13th Century and is a Greek cross shape with a number of columns, interesting for their variety of forms and decorations. The remains of the monastery are next to the church.