A Romanesque bell tower remains from the first church built in the 12th century. This tower-choir was transformed into a tower-porch (which incorporates the main entrance of a church at its base) when a new choir was added on the other side in the 19th century. This tower has three storeys and is pierced by a two-leaf portal. The tower is decorated with skylights and a frieze of semicircular arches on the first level, and the upper levels are pierced by a quintuple of semicircular bays and loopholes. The bell tower-porch has a four-sloped roof.