Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
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Dense, salty water — you float without effort.
SodiumChloruresBrome
Tucked away in Shibuya, Tokyo, Shibuya Sasazuka Onsen Sakaeyu draws on naturally heated thermal sodium-chloride water at 37°C. Visitors will find an indoor bath, rotenburo and sauna.
Insider tip — 'Sakaeyu' (prosperity spring) at Sasazuka Onsen in Shibuya ward — in the residential Sasazuka neighbourhood near the Keio line, a world away from the glittering neon of Shibuya Crossing just 2 km east. One of Tokyo's rare inner-city hot springs, tapping dark artesian 'kuroyu' waters beneath the metropolis. A neighbourhood treasure.