Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
In Itō, Shizuoka Prefecture, Gyokyo Chokuei Shokudo Banya no Yu pairs a seafood restaurant with sodium-chloride baths at 41°C. The site includes an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Gyokyo Chokuei Shokudo Banya no Yu is a municipality-operated onsen in Itō, a celebrated hot spring town on the Izu Peninsula where warm mineral water has been enjoyed since the Edo period. The sodium-chloride water is richly warming and offers relief for tired muscles after hiking the Izu volcanic trails. Ito's waterfront setting means you can combine your soak with a stroll along the picturesque harbour used by the Edo-era Dutch trading mission. The honest, no-frills bathhouse format reflects Ito's tradition of accessible community bathing.