Inside, the little church of San Valentino offers a remarkable series of frescoes (on the south and west wall and the choir) dating from the 14th and 15th century, brought to light between 1962 and 1972. On the external south wall other, better preserved frescoes can be admired: St. Christopher, a Madonna, St. Valentine and a crucifixion (unfortunately ruined by a window with a gothic arch opened up in a later era).