Tenzen Onsen is a day-use hot spring reached by the B-course bus from Hakone-Yumoto Station, with natural hot spring water plus a restaurant and cafe. It has an open-air bath, indoor and outdoor baths, and a sauna, and the shabu-shabu is made with hot spring water as its broth. The entrance controls the number of vehicles, so it is not crowded on weekdays, and inside there are reclining chairs and a space to rest after eating. Towels must be brought separately.