Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Tennen Onsen Heiwajima is located in the Ōta ward of Tokyo. The facility offers neutral-pH sodium-chloride water, with an indoor bath, a rotenburo-style outdoor bath and a sauna, near Tokyo Bay.
Insider tip — Tennen Onsen Heiwajima is a large natural thermal complex on the man-made island of Heiwajima (Ōta Ward, Tokyo), reachable by monorail. The natural sodium-chloride water (salt water) recalls seawater, beneficial for the skin and for aches. The site also offers saunas and scrub baths in a contemporary setting facing Tokyo Bay.