The church of St. Andrew, built between the 4th and 5th centuries, was subsequently reconstructed in Romanesque styles and consecrated in 1303. On the facade, a pentalobed rose window and two sepulchral baldachins can be seen; on the sides, one can admire the 17th-century bell tower and a small Renaissance porch. The interior consists of a single nave covered by trusses and four baldachins at the corners. It is decorated with frescoes from the 15th and 16th centuries attributed to Antonello da Serravalle, Francesco da Milano, and Palma Il Giovane. The interior is enriched by several valuable sculptures (baptismal font, two crucifixes, and a Renaissance altar), the tabernacle of Tizianesque style, and paintings created by artists such as Palma Il Giovane (1548-1628) and Francesco Frigimelica (around 1560-1649).