A silky beautiful-skin bath and the healing power of stone, embraced by Chichibu's nature
Saitama Chichibu City
Hoshine no Yu is a day-use hot spring facility in Chichibu City, Saitama Prefecture. Its alkaline spring water, with a pH of 9.0, bubbles up from underground and is known for its rich, silky texture, making it famous as a beautiful-skin bath. The sauna is a far-infrared sauna that uses the globally rare Seikoseki and Odo-seki stones, allowing guests to enjoy a pleasant wave of heat created by the energy of the stones. In the outdoor area, you will find a hinoki bath, a rock bath, and even Utatane no Yu, where you can lie back and gaze up at the sky. It is a blissful place to spend time while feeling the seasonal nature of Chichibu, and with its well-equipped rock baths and private open-air baths, it serves as a healing retreat for adults.
TypeNatural Hot Spring
An alkaline simple hot spring with a pH of 9.0 that bubbles up from underground. Its signature is a distinctive, silky texture that leaves the skin smooth after bathing. You can fully enjoy its rich qualities in the outdoor hinoki bath, rock bath, and the large indoor bath. With excellent heat retention, it offers a superb bathing experience that gently loosens both body and mind, together with the lush natural scenery of Chichibu.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity6people
A far-infrared sauna that uses the rare natural mineral stone Seikoseki throughout the room. The energy released by the stone and the steam from auto löyly combine to warm the body deeply from within. The heat feels remarkably soft, and along with the scent of wood, it brings a profound sense of relaxation. This is a thoughtfully designed sauna space where men and women alternate weekly.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity12people
Another sauna to enjoy on a weekly rotating basis, using mineral-rich Odo-seki. The far-infrared effect promotes perspiration, refreshing the skin while helping you feel renewed. Humidity is kept at a comfortable level, so it is not hard to breathe. In the calm lighting, you can enjoy a luxurious sweating experience while feeling the soothing power of the stone.
Water QualityTap Water
Capacity4people
A pleasantly cool cold plunge bath that tightly firms up your body after the sauna. The water is clear, gentle on the skin, and supports a smooth cooldown. It also has excellent flow to the outdoor area, including Utatane no Yu and benches for outdoor air bathing, offering the ultimate totonou experience while you feel Chichibu's crisp air.
Closed Days: None
468 Shimoyoshida, Chichibu City, Saitama 369-1503
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 silky beautiful-skin bath and the healing power of stone, embraced by Chichibu's nature
Saitama Chichibu City
Hoshine no Yu is a day-use hot spring facility in Chichibu City, Saitama Prefecture. Its alkaline spring water, with a pH of 9.0, bubbles up from underground and is known for its rich, silky texture, making it famous as a beautiful-skin bath. The sauna is a far-infrared sauna that uses the globally rare Seikoseki and Odo-seki stones, allowing guests to enjoy a pleasant wave of heat created by the energy of the stones. In the outdoor area, you will find a hinoki bath, a rock bath, and even Utatane no Yu, where you can lie back and gaze up at the sky. It is a blissful place to spend time while feeling the seasonal nature of Chichibu, and with its well-equipped rock baths and private open-air baths, it serves as a healing retreat for adults.
TypeNatural Hot Spring
An alkaline simple hot spring with a pH of 9.0 that bubbles up from underground. Its signature is a distinctive, silky texture that leaves the skin smooth after bathing. You can fully enjoy its rich qualities in the outdoor hinoki bath, rock bath, and the large indoor bath. With excellent heat retention, it offers a superb bathing experience that gently loosens both body and mind, together with the lush natural scenery of Chichibu.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity6people
A far-infrared sauna that uses the rare natural mineral stone Seikoseki throughout the room. The energy released by the stone and the steam from auto löyly combine to warm the body deeply from within. The heat feels remarkably soft, and along with the scent of wood, it brings a profound sense of relaxation. This is a thoughtfully designed sauna space where men and women alternate weekly.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity12people
Another sauna to enjoy on a weekly rotating basis, using mineral-rich Odo-seki. The far-infrared effect promotes perspiration, refreshing the skin while helping you feel renewed. Humidity is kept at a comfortable level, so it is not hard to breathe. In the calm lighting, you can enjoy a luxurious sweating experience while feeling the soothing power of the stone.
Water QualityTap Water
Capacity4people
A pleasantly cool cold plunge bath that tightly firms up your body after the sauna. The water is clear, gentle on the skin, and supports a smooth cooldown. It also has excellent flow to the outdoor area, including Utatane no Yu and benches for outdoor air bathing, offering the ultimate totonou experience while you feel Chichibu's crisp air.
Closed Days: None
468 Shimoyoshida, Chichibu City, Saitama 369-1503
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