Oshiba Kogen Onsen
TypeNatural Hot Spring
A colorless, transparent, weakly alkaline, hypotonic high-temperature hot spring. Gentle on the skin, it offers various therapeutic benefits.
Relaxation through forest therapy, onsen, and sauna
Nagano Minamiminowa Village
Fureai Exchange Center Oshiba no Yu is a day-use onsen facility located in the forest of Oshiba Kogen, a certified Forest Therapy Road in Minamiminowa Village, Nagano Prefecture. It features a spacious dry sauna, a well-chilled cold plunge bath, and an outdoor air-bathing area where you can feel the breeze of the great outdoors, making it highly popular among sauna enthusiasts.
TypeNatural Hot Spring
A colorless, transparent, weakly alkaline, hypotonic high-temperature hot spring. Gentle on the skin, it offers various therapeutic benefits.
Sauna TypeDry Sauna
Stove Typeelectric
Capacity20people
A spacious dry sauna. Temperature is set around 90–95°C, and regular löyly and heat-wave events are held.
Capacity6people
A relatively deep flow-through cold plunge bath. Water temperature is around 16–18°C, which firmly cools and tones the body after the sauna.
Closed Days: Thursday
2358-5, Minamiminowa Village, Kamiina District, Nagano Prefecture 399-4511, 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
Relaxation through forest therapy, onsen, and sauna
Nagano Minamiminowa Village
Fureai Exchange Center Oshiba no Yu is a day-use onsen facility located in the forest of Oshiba Kogen, a certified Forest Therapy Road in Minamiminowa Village, Nagano Prefecture. It features a spacious dry sauna, a well-chilled cold plunge bath, and an outdoor air-bathing area where you can feel the breeze of the great outdoors, making it highly popular among sauna enthusiasts.
TypeNatural Hot Spring
A colorless, transparent, weakly alkaline, hypotonic high-temperature hot spring. Gentle on the skin, it offers various therapeutic benefits.
Sauna TypeDry Sauna
Stove Typeelectric
Capacity20people
A spacious dry sauna. Temperature is set around 90–95°C, and regular löyly and heat-wave events are held.
Capacity6people
A relatively deep flow-through cold plunge bath. Water temperature is around 16–18°C, which firmly cools and tones the body after the sauna.
Closed Days: Thursday
2358-5, Minamiminowa Village, Kamiina District, Nagano Prefecture 399-4511, 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