Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Oto Onsen (Yume no Yu), in Gojō, Nara prefecture, offers sodium-chloride water at 41°C, split between an indoor bath and an outdoor rotenburo, with a sauna.
Insider tip — In Gojō, gateway to the Kumano mountains of southern Nara and the ancient Yoshino cedar forests, Yume no Yu (dream waters) offers mineral respite on the pilgrimage route between the Yoshino mountain temples and the Kumano Kodo sacred paths; the Nishiyoshino cherry blossom valleys and the remote mountain village atmosphere of southern Nara create dream-like scenery worthy of the onsen's evocative name.