Tohyamago Onsen
TypeNatural Hot Spring
A sulfur-containing sodium chloride hot spring. Its high salt content provides strong heat-retention effects, so the warm feeling persists well after bathing.
A rare high-concentration sodium chloride spring in the remote Tohyama-go area
Nagano Iida City
Tohyamago Kagura no Yu is a hot spring facility attached to the roadside station in the remote Tohyama-go area at the foot of the Southern Alps in Iida, Nagano Prefecture. You can enjoy a rare, mildly salty, high-concentration sulfur-containing sodium chloride hot spring. The long-awaited hot spring operations are scheduled to resume in fall 2025, and guests will be able to relax in a dry sauna, a spacious cold plunge bath, and an outdoor relaxation area where you can gaze up at a star-filled sky.
TypeNatural Hot Spring
A sulfur-containing sodium chloride hot spring. Its high salt content provides strong heat-retention effects, so the warm feeling persists well after bathing.
Sauna TypeDry Sauna
Stove Typeelectric
Capacity8people
A far-infrared dry sauna. Set to approximately 70-92°C, it is a TV-free space where you can quietly and thoroughly work up a sweat.
Capacity4people
A cold plunge bath located right in front of the sauna room. At about 15-16°C, the water is soft and mellow, allowing you to cool down thoroughly.
Closed Days: Thursday
456 Wada, Minamishinano, Iida, Nagano 399-1311, Japan (Michi-no-Eki Tohyamago)
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
A rare high-concentration sodium chloride spring in the remote Tohyama-go area
Nagano Iida City
Tohyamago Kagura no Yu is a hot spring facility attached to the roadside station in the remote Tohyama-go area at the foot of the Southern Alps in Iida, Nagano Prefecture. You can enjoy a rare, mildly salty, high-concentration sulfur-containing sodium chloride hot spring. The long-awaited hot spring operations are scheduled to resume in fall 2025, and guests will be able to relax in a dry sauna, a spacious cold plunge bath, and an outdoor relaxation area where you can gaze up at a star-filled sky.
TypeNatural Hot Spring
A sulfur-containing sodium chloride hot spring. Its high salt content provides strong heat-retention effects, so the warm feeling persists well after bathing.
Sauna TypeDry Sauna
Stove Typeelectric
Capacity8people
A far-infrared dry sauna. Set to approximately 70-92°C, it is a TV-free space where you can quietly and thoroughly work up a sweat.
Capacity4people
A cold plunge bath located right in front of the sauna room. At about 15-16°C, the water is soft and mellow, allowing you to cool down thoroughly.
Closed Days: Thursday
456 Wada, Minamishinano, Iida, Nagano 399-1311, Japan (Michi-no-Eki Tohyamago)
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