 Other sights include the 13th century church of Santa Maria in Pensulis, which was perhaps built over a Roman villa, and was originally owned by the Knights Hospitaller of Gaeta, and the 15th century church of San Michele Arcangelo, at Suio Alto.The thermal baths are situated along the Garigliano River and are a result of volcanic activity causing natural bubbling springs to occur.During the summer and spring months the hot springs are a common local spot.