Cold plunge bath using Hakushu's famed underground natural water and an ultra-high-concentration hot spring
Yamanashi Hokuto City
Ojiro no Yu, located inside the Hakushu Ojiro no Mori Meisui Park Verga in Hakushu, Hokuto City, is a day-use hot spring facility surrounded by the great nature of the Southern Alps. Its standout feature is a cold plunge bath supplied with Hakushu's underground natural water, which has been selected as one of Japan's 100 Famous Waters. At around 14℃, the ice-cold, superb water quality tightens the body perfectly after a sauna. Both the men's and women's areas have a dry sauna at about 90℃. You can also enjoy an ultra-high-concentration, mineral-rich natural hot spring called Akayu, offering the ultimate totonou (state of perfect relaxation) experience in harmony with nature.
TypeNatural Hot Spring
Enjoy the mineral-rich ultra-high-concentration source spring (Akayu) and Shirayu, which is diluted with natural water. This renowned hot spring is said to help relieve fatigue and provide warming therapeutic effects.
Sauna TypeDry Sauna
Stove Typestone
Capacity13people
A properly hot dry sauna at around 90℃. It is a quiet space without a TV where you can take your time and enjoy a thorough sweat.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity8people
A cold plunge bath continuously fed with Hakushu's underground natural water, one of Japan's famed waters. The water quality is outstanding and it is ice-cold, earning strong praise from sauna enthusiasts.
Closed Days: Wednesday
408-0315 8077-1 Shirasu, Hakushu-cho, Hokuto City, Yamanashi Prefecture, 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 moreCold plunge bath using Hakushu's famed underground natural water and an ultra-high-concentration hot spring
Yamanashi Hokuto City
Ojiro no Yu, located inside the Hakushu Ojiro no Mori Meisui Park Verga in Hakushu, Hokuto City, is a day-use hot spring facility surrounded by the great nature of the Southern Alps. Its standout feature is a cold plunge bath supplied with Hakushu's underground natural water, which has been selected as one of Japan's 100 Famous Waters. At around 14℃, the ice-cold, superb water quality tightens the body perfectly after a sauna. Both the men's and women's areas have a dry sauna at about 90℃. You can also enjoy an ultra-high-concentration, mineral-rich natural hot spring called Akayu, offering the ultimate totonou (state of perfect relaxation) experience in harmony with nature.
TypeNatural Hot Spring
Enjoy the mineral-rich ultra-high-concentration source spring (Akayu) and Shirayu, which is diluted with natural water. This renowned hot spring is said to help relieve fatigue and provide warming therapeutic effects.
Sauna TypeDry Sauna
Stove Typestone
Capacity13people
A properly hot dry sauna at around 90℃. It is a quiet space without a TV where you can take your time and enjoy a thorough sweat.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity8people
A cold plunge bath continuously fed with Hakushu's underground natural water, one of Japan's famed waters. The water quality is outstanding and it is ice-cold, earning strong praise from sauna enthusiasts.
Closed Days: Wednesday
408-0315 8077-1 Shirasu, Hakushu-cho, Hokuto City, Yamanashi Prefecture, 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