A rare onsen herb steam sauna and source-fed hot spring baths
Saga Saga City
Yusenkyo Onsenkan Yushoka is an upscale day-use onsen facility located in Kumanokawa Onsen, Saga City, Saga Prefecture. Guests can luxuriate in a high-quality, mildly radioactive simple spring rich in radon, enjoyed as a source-fed, free-flowing hot spring. In addition to a classic dry sauna, the facility features a rare onsen herb steam sauna found at only a few places nationwide. The scent of homegrown herbs combined with onsen steam deeply soothes body and mind. The cold plunge bath maintains a mild, comfortable temperature, and the open-air relaxation area on the wood-decked outdoor space surrounded by nature offers an exceptional outdoor cooling experience.
TypeNatural Hot Spring
A colorless, clear, and mild simple spring with weak radioactivity (radon spring). Served as a luxurious source-fed, free-flowing bath, the facility offers a variety of tubs at temperatures ranging from lukewarm to hot. Enjoy bathing while feeling the breath of nature in the spacious open-air baths and jacuzzi.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity14people
A two-tier dry sauna using gas far-infrared heaters. It is installed in whichever of the day-switched male or female baths is in use, either the rock or cypress bathing area. Not overly dry and with moderate humidity, you can work up a good sweat while watching TV.
Sauna TypeSteam Sauna
Capacity4people
A one-of-a-kind steam sauna combining onsen steam with the aroma of several types of homegrown herbs. The room temperature is a modest 50–60°C but high humidity ensures the body warms thoroughly. It offers a deeply relaxing, forest-bathing like comfort.
Water QualityTap Water
Capacity2people
Characterized by a soft feel and a gentle, low-irritation touch on the skin. It gently embraces the body after a sauna session, allowing for a slow, comfortable cooldown.
Closed Days: Tuesday, Wednesday
180-1 Kamikumagawa, Fuji-machi, Saga City, Saga Prefecture 840-0512, 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
A rare onsen herb steam sauna and source-fed hot spring baths
Saga Saga City
Yusenkyo Onsenkan Yushoka is an upscale day-use onsen facility located in Kumanokawa Onsen, Saga City, Saga Prefecture. Guests can luxuriate in a high-quality, mildly radioactive simple spring rich in radon, enjoyed as a source-fed, free-flowing hot spring. In addition to a classic dry sauna, the facility features a rare onsen herb steam sauna found at only a few places nationwide. The scent of homegrown herbs combined with onsen steam deeply soothes body and mind. The cold plunge bath maintains a mild, comfortable temperature, and the open-air relaxation area on the wood-decked outdoor space surrounded by nature offers an exceptional outdoor cooling experience.
TypeNatural Hot Spring
A colorless, clear, and mild simple spring with weak radioactivity (radon spring). Served as a luxurious source-fed, free-flowing bath, the facility offers a variety of tubs at temperatures ranging from lukewarm to hot. Enjoy bathing while feeling the breath of nature in the spacious open-air baths and jacuzzi.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity14people
A two-tier dry sauna using gas far-infrared heaters. It is installed in whichever of the day-switched male or female baths is in use, either the rock or cypress bathing area. Not overly dry and with moderate humidity, you can work up a good sweat while watching TV.
Sauna TypeSteam Sauna
Capacity4people
A one-of-a-kind steam sauna combining onsen steam with the aroma of several types of homegrown herbs. The room temperature is a modest 50–60°C but high humidity ensures the body warms thoroughly. It offers a deeply relaxing, forest-bathing like comfort.
Water QualityTap Water
Capacity2people
Characterized by a soft feel and a gentle, low-irritation touch on the skin. It gently embraces the body after a sauna session, allowing for a slow, comfortable cooldown.
Closed Days: Tuesday, Wednesday
180-1 Kamikumagawa, Fuji-machi, Saga City, Saga Prefecture 840-0512, 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