12th-13th centuries. One nave structure with one apse. Remarkable Romanesque mural paintings from the end of 12th century. They represent scenes from the Genesis, from the death of Christ and portraits also a magnificent Pantocrator. Baroque chapel to the north side, which treasures the figure of Gascony Christ (Cristo de los Gascones). This valuable statue is taken out onto the Easter parade that annually takes place in the city