The ancient Romanesque church is dedicated to the patron saint of the village. Although it is already mentioned in 1118 as the property of the Camaldolese monastery on the island of Montecristo, there is a lack of certain information regarding its construction.
The temple stands on a funerary site by Byzantine era; set on single hall apsidal with wooden roofing. On the outside, the elevations, made of dark trachyte ashlars, are enclosed by angular pilasters and punctuated by smooth pilasters, while above runs a continuous row of rounded hanging arches on corbels. Narrow single-lancet windows open on each mirror of the sides, also repeated in the semicircular apse.
The gabled facade is distinguished in three narrow mirrors by pilasters and concluded, at the apex, by double-arched bell gable. In the central mirror opens the quadrangular portal with a round lunette set on anthropomorphic protomes.
The interior preserves the wooden sculpture of the titular saint and the 16th-century mausoleum of Marquis Emanuele di Castelvì; this, made of marble and trachyte, offers the statue of the deceased kneeling on the trachyte sarcophagus, supported by two white marble lions.
