Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Tohokuhara Onsen, in Kōriyama, Fukushima prefecture, offers sodium-chloride water at 41°C. An indoor bath, an outdoor rotenburo bath and a sauna round out the facility.
Insider tip — Tohokuhara, the northeastern plain, describes the broad agricultural basin around Koriyama where Fukushima production of rice, peaches, and sake has flourished since the Edo period. The spring here serves a working-class residential neighbourhood and draws loyal regulars who know the value of a daily soak.