The Suio thermal baths are renowned for the treatment of various diseases of the liver and skin thanks to springs with temperature from 0 ° to 60 °. The waters of more than thirty springs are classified as the first in Italy and third in Europe for the amount of iodine. The hot springs were already used by the Aurunci, first, and then by the Romans. The thermal waters were Vescinae came (people from the city of Vescia), are told by Pliny and Lucan. In the area of Terme Duratorre you can still admire the ancient tub of Nero, testimony to the splendour of the era. The 'caldana putida', as the hot springs were called in the Middle Ages, also appears in the papal bulls of Adrian IV and Cassinesi Chronicles (XI, XII century).