Despite its somewhat decrepit appearance and unusual location beneath a motorway overpass, this thermal complex houses several incredible mud baths. Men and women relax in the vast open-air pool, enjoying the sandy mixture heated by ferruginous water. Rubbing your skin with the natural sediments found at the bottom of the pool will leave it smooth and healthy. In the neighboring area, small thatched cabins (yu-no-sato) manufacture bath salts.