Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Himehiko Onsen is a hot spring facility in Matsuyama, Ehime Prefecture, Japan. The sodium-chloride thermal water emerges at 40°C. Guests can use an indoor bath, an outdoor bath (rotenburo) and a sauna.
Insider tip — Matsuyama is Japan's most bath-rich city — the legendary Dogo Onsen, the oldest certified hot spring in the country, anchors a bathing culture so pervasive that nearly every neighborhood has its own sento. Himehiko (princess-and-hero) Onsen serves the eastern residential neighborhoods where everyday Matsuyama life unfolds far from the castle and tourist quarters. The Mitsui-zaima bus route connects these neighborhoods to Dogo and the castle — Matsuyama's bathing culture extends even to its transit corridors.