Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Chomei Onsen, now closed, was located in Nagoya, Aichi Prefecture. Its thermal sodium-chloride water reached 40°C, with an indoor bath, outdoor rotenburo and sauna.
Insider tip — Listed as closed — verify locally before visiting. Chomei (長命 — long life) Onsen was in southern Nagoya's Tempaku ward. The name reflects the ancient Japanese belief in the invigorating qualities of thermal waters — a tradition rooted in Shinto purification rites. Even closed, names like 'Chomei' record the aspirations of communities who built these shared bathing spaces in postwar Nagoya.