Refresh your mind and body with a smooth groundwater-flowing cold plunge bath and two kinds of saunas
Fukushima Soma City
"Nittagawa Onsen Haramachi Yussa" is a day-use hot spring facility in Minamisoma, Fukushima Prefecture. Its alkaline simple spring with a pH of 9.3 is cherished as a "beauty bath" that leaves the skin feeling smooth. The sauna facilities are excellent, featuring two types of saunas: a high-temperature dry sauna and a pleasantly steamy salty sauna, with men and women alternating by day. Most notably, the cold plunge bath uses generously flowing natural groundwater, and its smooth feel and refreshing coolness are exceptional. Together with the open-air bath and outdoor air bath area, you can savor a blissful totonou experience while feeling the blessings of nature.
TypeNatural Hot Spring
A gentle alkaline simple hot spring with a pH of 9.3. It has strong cleansing effects and gently removes old dead skin cells, earning it fame as a "beauty bath." The water has an exceptionally smooth feel, and you can feel your skin become silky the moment you step in. The open-air bath and a variety of indoor baths let you fully enjoy the restorative power of the hot spring.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity10people
A full-fledged dry sauna filled with powerful heat. The comfortable warmth efficiently promotes sweating and gently eases daily fatigue. In calm lighting, it is a quiet space where you can sweat while facing yourself. It also pairs exceptionally well with the groundwater-flowing cold plunge bath after sauna use, delivering an overwhelming sense of refreshment.
Sauna TypeSalt Sauna
Stove TypeInfrared Heater
Capacity10people
A salty sauna with a comfortable temperature setting that lets you work up a sweat slowly. The effect of salt promotes perspiration, allowing you to enjoy a detox experience that leaves your skin feeling smooth. With less feeling of breathlessness, even those who are not fond of saunas can relax and stay in for a long time. A soothing space where steam gently loosens both body and mind.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity3people
A cold plunge bath luxuriously filled with natural water pumped up from underground and continuously flowing through. The water quality is amazingly smooth, with a soft, skin-adhering feel. While the temperature is crisply cold, the mellow character unique to natural water allows for a pleasant cool-down. Fresh water is constantly flowing in, refreshing your body after the sauna.
Closed Days: Thursday
〒975-0071 Fukushima Prefecture, Minamisoma, Haramachi Ward, Fukano Aratosawa 15
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
Refresh your mind and body with a smooth groundwater-flowing cold plunge bath and two kinds of saunas
Fukushima Soma City
"Nittagawa Onsen Haramachi Yussa" is a day-use hot spring facility in Minamisoma, Fukushima Prefecture. Its alkaline simple spring with a pH of 9.3 is cherished as a "beauty bath" that leaves the skin feeling smooth. The sauna facilities are excellent, featuring two types of saunas: a high-temperature dry sauna and a pleasantly steamy salty sauna, with men and women alternating by day. Most notably, the cold plunge bath uses generously flowing natural groundwater, and its smooth feel and refreshing coolness are exceptional. Together with the open-air bath and outdoor air bath area, you can savor a blissful totonou experience while feeling the blessings of nature.
TypeNatural Hot Spring
A gentle alkaline simple hot spring with a pH of 9.3. It has strong cleansing effects and gently removes old dead skin cells, earning it fame as a "beauty bath." The water has an exceptionally smooth feel, and you can feel your skin become silky the moment you step in. The open-air bath and a variety of indoor baths let you fully enjoy the restorative power of the hot spring.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity10people
A full-fledged dry sauna filled with powerful heat. The comfortable warmth efficiently promotes sweating and gently eases daily fatigue. In calm lighting, it is a quiet space where you can sweat while facing yourself. It also pairs exceptionally well with the groundwater-flowing cold plunge bath after sauna use, delivering an overwhelming sense of refreshment.
Sauna TypeSalt Sauna
Stove TypeInfrared Heater
Capacity10people
A salty sauna with a comfortable temperature setting that lets you work up a sweat slowly. The effect of salt promotes perspiration, allowing you to enjoy a detox experience that leaves your skin feeling smooth. With less feeling of breathlessness, even those who are not fond of saunas can relax and stay in for a long time. A soothing space where steam gently loosens both body and mind.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity3people
A cold plunge bath luxuriously filled with natural water pumped up from underground and continuously flowing through. The water quality is amazingly smooth, with a soft, skin-adhering feel. While the temperature is crisply cold, the mellow character unique to natural water allows for a pleasant cool-down. Fresh water is constantly flowing in, refreshing your body after the sauna.
Closed Days: Thursday
〒975-0071 Fukushima Prefecture, Minamisoma, Haramachi Ward, Fukano Aratosawa 15
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