Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Shimizu no Yu, in the historic hot-spring town of Gero, Gifu, uses sodium-chloride water at 41°C. An indoor bath, an outdoor rotenburo and a sauna are available.
Insider tip — Shimizu no Yu serves the Hida River shore of Gero City, one of Japan three celebrated spa destinations alongside Arima and Kusatsu — a distinction bestowed by the 10th-century monk Nishigori Yorimitsu who identified these springs as Japan finest after bathing in all the nation thermal waters. The Gero Onsen district on the Hida River canyon floor has evolved from medieval pilgrimage spa to modern resort town, and the alkaline spring waters that made Gero famous have sustained bathers in this dramatic mountain gorge for over a thousand years of continuous use.