Spas with cold plunge in Japan

Shibu Onsen, Nagano

Reservation-only private hot spring and sauna suites at a Nagano brewery complex, built around a craft beer bathing plan for two to four guests.

Gero, Gifu

Neighborhood sento in Gero using real onsen water, with outdoor bath, sauna, cold plunge and a 10-minute walk from JR Gero Station.

Sakuho, Nagano

Outdoor wood-fired sauna complex in Sakuho, Nagano, with natural water pools and a mountain stream for cooling off.

Noboribetsu, Hokkaido

An oni-themed sauna circuit at Noboribetsu Grand Hotel with a 110°C auto-löyly room, a 16°C stream-fed plunge and a waterfall-view deck.

Noboribetsu, Hokkaido

A 21-room ryokan in Noboribetsu Onsen with a 100% source-fed sulfur hot spring, in-room kaiseki dinners and free shuttle service.