Onsen saunas in Tokyo, Japan
天然温泉 たからゆ
Takarayu is a neighbourhood bathhouse in Wakamiya, Nakano, six minutes from Nogata Station, whose water was certified as a natural hot spring in 2025. It has an auto-löyly stone sauna and a humid comfort sauna with a TV, which swap between the men's and women's sides every month, and a radon cold bath of ultra-soft water treated with Bad Gastein ore. There is also an open-air silky bath and a carbonated bath. Sauna ¥500 on top of ¥550 entry. Open 13:00–24:00, closed Mondays; tattoos allowed.
天然温泉 湯どんぶり栄湯
Yudonburi Sakaeyu is a neighbourhood bathhouse near Minowa where every bath, tap and shower runs on natural hot-spring water, some of it warmed by rooftop solar collectors since 1979. The sento says the automatic heat-wave fan found in Japanese saunas began here, and a fine-bubble cold bath follows the sauna. Entry is ¥600 plus ¥600 for the sauna, and a trailer sauna can be booked separately. Open 14:00–23:00, from 12:00 on Sundays and holidays; closed Wednesdays.
押上温泉 大黒湯
Oshiage Onsen Daikokuyu, six minutes from Oshiage Station, is a sento founded in 1949 whose baths use a weakly alkaline natural hot spring, with the Skytree in view from its large open-air bath. Both sides have a 95 °C far-infrared sauna; one side adds a mugwort salt steam sauna at 50–60 °C, and the two bath halls swap daily. Second-floor decks with hammocks serve for cooling. Sauna ¥300–400 extra on ¥600 entry; open mid-afternoon to 10:00 next morning; closed Tuesdays; tattoos allowed.
東京ドーム天然温泉 スパ ラクーア
Spa LaQua is a large hot-spring spa in Tokyo Dome City fed by amber sodium chloride water from 1,700 m underground. The men's baths have four saunas, including a 100 °C log sauna, a Finnish self-löyly sauna and a sauna with staff-led aufguss; the women's have three, including a 45 °C mist sauna, with staff löyly sessions. Cold baths run at about 17 to 22 °C. Adult entry from ¥3,500 including towels and loungewear; open 11:00 to 9:00 the next day; no tattoos.
天然温泉 たからゆ
Takarayu is a neighbourhood bathhouse in Wakamiya, Nakano, six minutes from Nogata Station, whose water was certified as a natural hot spring in 2025. It has an auto-löyly stone sauna and a humid comfort sauna with a TV, which swap between the men's and women's sides every month, and a radon cold bath of ultra-soft water treated with Bad Gastein ore. There is also an open-air silky bath and a carbonated bath. Sauna ¥500 on top of ¥550 entry. Open 13:00–24:00, closed Mondays; tattoos allowed.
天然温泉 湯どんぶり栄湯
Yudonburi Sakaeyu is a neighbourhood bathhouse near Minowa where every bath, tap and shower runs on natural hot-spring water, some of it warmed by rooftop solar collectors since 1979. The sento says the automatic heat-wave fan found in Japanese saunas began here, and a fine-bubble cold bath follows the sauna. Entry is ¥600 plus ¥600 for the sauna, and a trailer sauna can be booked separately. Open 14:00–23:00, from 12:00 on Sundays and holidays; closed Wednesdays.
押上温泉 大黒湯
Oshiage Onsen Daikokuyu, six minutes from Oshiage Station, is a sento founded in 1949 whose baths use a weakly alkaline natural hot spring, with the Skytree in view from its large open-air bath. Both sides have a 95 °C far-infrared sauna; one side adds a mugwort salt steam sauna at 50–60 °C, and the two bath halls swap daily. Second-floor decks with hammocks serve for cooling. Sauna ¥300–400 extra on ¥600 entry; open mid-afternoon to 10:00 next morning; closed Tuesdays; tattoos allowed.
東京ドーム天然温泉 スパ ラクーア
Spa LaQua is a large hot-spring spa in Tokyo Dome City fed by amber sodium chloride water from 1,700 m underground. The men's baths have four saunas, including a 100 °C log sauna, a Finnish self-löyly sauna and a sauna with staff-led aufguss; the women's have three, including a 45 °C mist sauna, with staff löyly sessions. Cold baths run at about 17 to 22 °C. Adult entry from ¥3,500 including towels and loungewear; open 11:00 to 9:00 the next day; no tattoos.