Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Amakusa Shimoda Onsen Center Hakurokan sits on the Amakusa archipelago, Kumamoto. The sodium-chloride water rises to 41°C, with an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Amakusa Shimoda Onsen Center Hakurokan offers sodium-chloride bathing on the Amakusa Islands, an archipelago in Kumamoto Prefecture where marine geology produces salt-rich thermal springs with excellent heat-retention properties. The center overlooks the tranquil inland sea and provides both indoor and outdoor pools. Its saltwater character is especially prized in winter for its long-lasting warming effect on the body.