Enjoy authentic black bath natural hot spring and an evolved three-sauna experience close to central Tokyo
Saitama Wako City
"Gokurakuyu Wako" is a large day-use hot spring facility in Wako City, Saitama Prefecture, with excellent access from central Tokyo. Its natural hot spring water, gushing up from 1,000 m underground, is a rare in Tokyo-area black bath sodium bicarbonate spring known for leaving the skin smooth and promoting beautiful skin. The sauna facilities are exceptionally well equipped, with three types on the men's side: a large sauna with automatic löyly, a sauna featuring a heat-wave machine, and a full-scale barrel sauna. The women's side also offers a dazzling dry sauna and a moisture-rich mist sauna. Popular spots include the black bath carbonated spring, made by dissolving carbon dioxide into the black bath, and an open-air stone bath, where you can enjoy the appeal of the source in a variety of styles.
TypeNatural Hot Spring
A natural hot spring gushing from 1,000 m underground, rare even in the Tokyo area for its black bath water. Its sodium bicarbonate spring quality has made it popular as a beauty bath that leaves the skin silky smooth. You can enjoy the appeal of the source in the open-air stone bath and other baths.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity25people
A stadium-style sauna with five-tier seating. Regular automatic löyly fills your entire body with powerful heat, promoting deep sweating. This is the main sauna, where you can enjoy authentic heat in a spacious setting.
Sauna TypeDry Sauna
Capacity8people
A full-scale barrel sauna installed in the open-air area. In this compact space with the warmth of wood, you can directly experience overwhelming heat, making it a coveted spot for sauna enthusiasts.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity15people
A dazzling dry sauna with five tiers of seating. Its pleasant heat gently envelops your entire body and steadily relieves daily fatigue. In the spacious interior, you can enjoy your sauna time at a relaxed pace.
Sauna TypeMist Sauna
Capacity8people
A moisture-rich sauna filled with fine mist. With its mild temperature setting, you can relax slowly without straining your body. A soothing space that gently hydrates your skin and throat.
Water QualityTap Water
Capacity10people
A spacious cold plunge bath located very close to the sauna. Its crisp coldness instantly cools down your heated body after the sauna, leading you into a refreshing cooldown.
Closed Days: None
〒351-0101 Saitama Prefecture, Wako City, Shirako 1-7-6
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
Enjoy authentic black bath natural hot spring and an evolved three-sauna experience close to central Tokyo
Saitama Wako City
"Gokurakuyu Wako" is a large day-use hot spring facility in Wako City, Saitama Prefecture, with excellent access from central Tokyo. Its natural hot spring water, gushing up from 1,000 m underground, is a rare in Tokyo-area black bath sodium bicarbonate spring known for leaving the skin smooth and promoting beautiful skin. The sauna facilities are exceptionally well equipped, with three types on the men's side: a large sauna with automatic löyly, a sauna featuring a heat-wave machine, and a full-scale barrel sauna. The women's side also offers a dazzling dry sauna and a moisture-rich mist sauna. Popular spots include the black bath carbonated spring, made by dissolving carbon dioxide into the black bath, and an open-air stone bath, where you can enjoy the appeal of the source in a variety of styles.
TypeNatural Hot Spring
A natural hot spring gushing from 1,000 m underground, rare even in the Tokyo area for its black bath water. Its sodium bicarbonate spring quality has made it popular as a beauty bath that leaves the skin silky smooth. You can enjoy the appeal of the source in the open-air stone bath and other baths.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity25people
A stadium-style sauna with five-tier seating. Regular automatic löyly fills your entire body with powerful heat, promoting deep sweating. This is the main sauna, where you can enjoy authentic heat in a spacious setting.
Sauna TypeDry Sauna
Capacity8people
A full-scale barrel sauna installed in the open-air area. In this compact space with the warmth of wood, you can directly experience overwhelming heat, making it a coveted spot for sauna enthusiasts.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity15people
A dazzling dry sauna with five tiers of seating. Its pleasant heat gently envelops your entire body and steadily relieves daily fatigue. In the spacious interior, you can enjoy your sauna time at a relaxed pace.
Sauna TypeMist Sauna
Capacity8people
A moisture-rich sauna filled with fine mist. With its mild temperature setting, you can relax slowly without straining your body. A soothing space that gently hydrates your skin and throat.
Water QualityTap Water
Capacity10people
A spacious cold plunge bath located very close to the sauna. Its crisp coldness instantly cools down your heated body after the sauna, leading you into a refreshing cooldown.
Closed Days: None
〒351-0101 Saitama Prefecture, Wako City, Shirako 1-7-6
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