Find out what temperature the hot waters reach at Spa of the Popes. Surrounded by spectacular nature, this mineral-rich thermal spring is a popular day trip.
This naturally heated water source is on the to-do lists of many visitors to Viterbo. But Spa of the Popes isn't the area's only highlight. Viterbo Cathedral, Bagnaccio Hot Springs, and Piazza San Lorenzo are some other worthwhile sights nearby.