Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Momotaro Onsen (Itoukan), in Tsuyama, Okayama prefecture, draws sodium-chloride water at 41°C for its indoor bath and outdoor rotenburo; a sauna is also available.
Insider tip — Momotaro Onsen Itoukan recalls the beloved Japanese folk hero born from a peach in the nearby Okayama region, channelling regional pride into a welcoming neighbourhood bathhouse. The sodium-chloride spring delivers salt-rich water that warms the body deeply and leaves skin with a smooth, moisturised finish. Located in the castle-town of Tsuyama, the bath sits amid a landscape of historical temples and cherry-lined riverbanks ideal for post-soak strolling. The inn-attached facility maintains a traditional wooden ambiance that transports guests away from modern urban life.