Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Pyramid Genki Onsen is located in Nasushiobara, Tochigi Prefecture. The sodium-chloride water reaches 42°C. The bathhouse offers an indoor bath, an outdoor bath (rotenburo) and a sauna.
Insider tip — In the storied Shiobara valley of Nasushiobara, Pyramid Genki Onsen (vitality pyramid) draws on the same brine-rich sodium-chloride aquifer that has made this gorge a celebrated hot spring destination since the Meiji era; the pyramid building form is a striking architectural counterpoint to the forested canyon scenery surrounding it.