Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Dense, salty water — you float without effort.
Kochi Niyodogawa Onsen is nestled along the pristine Niyodo River in Niyodogawa town, Kochi Prefecture — a waterway celebrated as one of Japan's clearest and most beautiful rivers. The chloride-rich spring waters warm bathers thoroughly and help revive tired bodies, making the onsen a beloved stop for kayakers and nature enthusiasts who come to experience Shikoku's extraordinary river landscapes. The combination of crystal-clear river scenery and restorative thermal bathing creates a uniquely rejuvenating experience in the heart of rural Kochi.