5 Facilities
A public bath in the heart of Gero, one of Japan's three famous springs. The alkaline simple spring (pH over 9) leaves skin silky — the classic 'beauty bath' — for just ¥470. Indoor pool only, popular with locals. Combine it with the ¥1,500 'yumeguri' pass that admits you to three ryokan baths. 10 minutes on foot from Gero Station.
A public bath that is entirely open-air, on the Hida River. No indoor pool — six outdoor tubs including a waterfall shower, box steam and pot baths. Gero's silky pH 8.9 water with a river breeze.
A bathhouse-style onsen behind Gero Station with seven baths — waterfall, open-air, jets, sauna — for less than half a ryokan's day-use fee. Bring soap or buy it from the vending machine.
Three minutes on foot from JR Gero Station, this is the day-bathing option at Suimeikan, one of Gero Onsen's landmark ryokan. Entry is taken 11:00–14:00 at ¥1,500 for adults and ¥1,000 for children aged 3 to elementary school, with a face towel and bath towel included. You may use either the open-air bath on the first floor of the Sansuikaku wing or the viewing great bath on the ninth floor of the Hisenkan wing, one visit to one of them. Its alkaline simple spring feels smooth, and being this close to the station is the draw. Cash only.
A free spring-water spot on the bed of the Hida River, the symbol of Gero Onsen - one of Japan's three great onsen. Gero's source water flows free into an open rock basin with no enclosure at all; once loved as a mixed open-air bath in swimwear, bathing has been prohibited since December 1, 2021, and it is now a foot-bath-only spot. Dipping your feet in the pH ~9.2 alkaline simple spring - the famous beauty-skin water - while the river murmurs beside you is a Gero-only experience. Just a 3-minute walk from JR Gero Station and usable around the clock (briefly closed for cleaning around 7:00-8:00; unavailable when the river runs high). For a full bath, head to nearby Shirasagi-no-Yu (370 yen), the Qua Garden open-air baths, or a ryokan covered by the bath-hopping booklet. A perfect starting point for strolling the onsen town.