Constructed in the 11th century above the remains of a Roman building, the Parish Church of San Martino was later enlarged in the first half of the 19th century, when the project by architect Rodolfo Vantini added two majestic domes. The church has five altars with paintings by Andrea Celesti, Andrea Bertanza and G. Bettino Cignaroli. The large dimensions of the church (approximately seventy metres long by twenty metres wide) has been preserved until today.