Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Isawagawa Onsen Sakura no Yu is a hot spring facility in Ichinoseki, Iwate Prefecture. The sodium-chloride water flows at 41°C, pH 7.3. It offers an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — Isawagawa Onsen Sakura no Yu sits along the Isawa River in Ichinoseki, channeling sodium-chloride spring water into a bathhouse that celebrates the cherry blossom season in both name and seasonal decoration. The salt-bearing water creates a gentle warmth that penetrates deeply into muscles stiffened by outdoor activity in the Iwate mountains. Spring visits during the famous Ichinoseki cherry blossom festival are magical, with petals occasionally drifting into the open-air bath area. The combination of mineral warmth and floral scenery represents classic Tohoku onsen culture at its most evocative.