Ariake Onsen Bijin no Yu, in Uki, Kumamoto, by the Ariake Sea, offers thermal water at 41°C. An indoor bath, an outdoor rotenburo and a sauna round out the facility.
Insider tip — Ariake Onsen Bijin no Yu, the beauty bath, is celebrated in the Ariake Sea coastal area of Kumamoto for its gentle, skin-smoothing thermal waters that local women have treasured for generations. The modern facility sits against a backdrop of volcanic Kyushu hills and offers soothing baths at a relaxed pace. Late-afternoon light streaming into the rotenburo creates a particularly memorable bathing atmosphere.