11th-century Romanesque church consisting of a single nave, barrel-vaulted and reinforced by three transverse arches, and a semicircular apse adorned on the outside with a distinctive frieze of sawtooth-shaped prisms. The apse connects to the nave via a simple step, next to which are two relieving arches on either side. The doorway, with two recessed arches, is in the south wall, flanked by two sloping buttresses. The most striking feature is the square-plan bell tower attached to the north side, near the apse. It has a plain base and three Lombard-style levels: the first with two blind arcades; the second, a window with a mensuliform capital framed by arcading; and the third with two broader blind arcades and a central oculus. The interplay of volumes creates remarkable chiaroscuro effects. On the north and east façades of the lower level, remains of mural painting in red lines on a white background can still be seen.