Spectacular ocean views and two types of saunas
Kumamoto Kamiamakusa City
A combined facility of natural hot springs and thalassotherapy located on a hill with panoramic views of the Ariake Sea. Enjoy the chloride and bicarbonate hot spring water that wells up from 1,000 meters underground in the spectacular open-air baths. The facility offers two types of saunas: a comfortable Ryori Sauna for pleasant sweating, and a Binchotan charcoal hot spring steam room that uses steam from the onsen. There is also a well-chilled cold plunge bath, and outdoor cooling while feeling the sea breeze is exceptional.
TypeNatural Hot Spring
Hot spring water gushing from 1,000 meters underground. It has strong moisturizing and skin-beautifying properties, and you can enjoy continuous-flow open-air baths overlooking the Ariake Sea.
Sauna TypeDry Sauna
Capacity10people
A sauna maintained at around 75°C with 40% humidity. It allows comfortable sweating without the stress of excessive heat.
Sauna TypeSteam Sauna
Capacity6people
A mist sauna that generates hot spring steam from beneath the floor and lines the walls with Binchotan charcoal. It refreshes body and mind as a soothing sauna experience.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
The far-infrared sauna promotes sweating and can help with weight loss and slimming, stress relief, overall skin beautification, anti-aging, and recovery from fatigue.
Water QualityTap Water
Capacity5people
A well-chilled cold plunge bath about 90 cm deep. It tightens and refreshes the body after a sauna session.
Closed Days: Tuesday
732-14 Kami, Oyano-machi, Kamiamakusa-shi, Kumamoto 869-3602, Japan
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more
Spectacular ocean views and two types of saunas
Kumamoto Kamiamakusa City
A combined facility of natural hot springs and thalassotherapy located on a hill with panoramic views of the Ariake Sea. Enjoy the chloride and bicarbonate hot spring water that wells up from 1,000 meters underground in the spectacular open-air baths. The facility offers two types of saunas: a comfortable Ryori Sauna for pleasant sweating, and a Binchotan charcoal hot spring steam room that uses steam from the onsen. There is also a well-chilled cold plunge bath, and outdoor cooling while feeling the sea breeze is exceptional.
TypeNatural Hot Spring
Hot spring water gushing from 1,000 meters underground. It has strong moisturizing and skin-beautifying properties, and you can enjoy continuous-flow open-air baths overlooking the Ariake Sea.
Sauna TypeDry Sauna
Capacity10people
A sauna maintained at around 75°C with 40% humidity. It allows comfortable sweating without the stress of excessive heat.
Sauna TypeSteam Sauna
Capacity6people
A mist sauna that generates hot spring steam from beneath the floor and lines the walls with Binchotan charcoal. It refreshes body and mind as a soothing sauna experience.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
The far-infrared sauna promotes sweating and can help with weight loss and slimming, stress relief, overall skin beautification, anti-aging, and recovery from fatigue.
Water QualityTap Water
Capacity5people
A well-chilled cold plunge bath about 90 cm deep. It tightens and refreshes the body after a sauna session.
Closed Days: Tuesday
732-14 Kami, Oyano-machi, Kamiamakusa-shi, Kumamoto 869-3602, Japan
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more