Agri no Yu
TypeNatural Hot Spring
A natural sodium chloride spring. It is effective for neuralgia and recovery from fatigue, and leaves the skin feeling smooth after bathing.
Panoramic sauna overlooking Mount Asama
Nagano Komoro City
Agri no Yu Komoro is a day-use hot spring facility in Komoro City, Nagano Prefecture. In addition to outdoor baths, its standout feature is a glass-walled sauna room that offers sweeping views of the majestic Mount Asama range and the Komoro cityscape. The facility has a properly hot dry sauna and a seasonally adjusted, comfortable cold plunge bath, and the outdoor cool-down while taking in the breathtaking natural scenery is exceptional.
TypeNatural Hot Spring
A natural sodium chloride spring. It is effective for neuralgia and recovery from fatigue, and leaves the skin feeling smooth after bathing.
Sauna TypeDry Sauna
Stove Typeelectric
Capacity12people
A dry sauna with large windows that provide unobstructed views of the Asama range. You can work up a good sweat while enjoying spectacular sights such as the crimson glow on Mount Asama at sunset.
Water Qualitytap
Capacity3people
A refreshing cold plunge bath after the sauna. Water temperature varies by season, but it can thoroughly cool your body down.
Closed Days: None
1145-1 Okubo, Komoro City, Nagano 384-0071, 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
Panoramic sauna overlooking Mount Asama
Nagano Komoro City
Agri no Yu Komoro is a day-use hot spring facility in Komoro City, Nagano Prefecture. In addition to outdoor baths, its standout feature is a glass-walled sauna room that offers sweeping views of the majestic Mount Asama range and the Komoro cityscape. The facility has a properly hot dry sauna and a seasonally adjusted, comfortable cold plunge bath, and the outdoor cool-down while taking in the breathtaking natural scenery is exceptional.
TypeNatural Hot Spring
A natural sodium chloride spring. It is effective for neuralgia and recovery from fatigue, and leaves the skin feeling smooth after bathing.
Sauna TypeDry Sauna
Stove Typeelectric
Capacity12people
A dry sauna with large windows that provide unobstructed views of the Asama range. You can work up a good sweat while enjoying spectacular sights such as the crimson glow on Mount Asama at sunset.
Water Qualitytap
Capacity3people
A refreshing cold plunge bath after the sauna. Water temperature varies by season, but it can thoroughly cool your body down.
Closed Days: None
1145-1 Okubo, Komoro City, Nagano 384-0071, 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