ThePieve (Pleban church) of San Pietro, dating to the 11th century and perhaps built over the ruins of a Pagan temple, has a medieval portal under which are five frescoes ofSt. Antony Abbot,Virgin with Child,Virgin with Saints,Sacrifice of Cain and Abel andSunday Christ. The interior, with a nave and two aisles, has frescoes from the 12th-15th centuries. The apse features aChrist Pantocrator between the Virgin and St. Peter dating to the 13th century.