Shibukawa Onsen Nagano
- Location
- Shibukawa, Gunma Prefecture, Japan
- Water type
- sodium chloride
- Temperature
- 43 °C
- pH
- 7.3
Water profile
Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Dense, salty water — you float without effort.
Located in the Ueda area of Nagano Prefecture, Shibukawa Onsen is a traditional Japanese hot spring resort drawing on chloride-rich thermal waters appreciated for their warming and skin-softening qualities within a long thermal tradition. The saline mineral content of these onsen waters is traditionally associated with deep relaxation, making it a favored retreat for visitors seeking restful escape amid the cultural landscape of the Japanese Alps. Set within easy reach of Ueda's historic castle town, this bathhouse embodies the Japanese practice of toji—extended immersion bathing—connecting body and spirit with the geothermal forces beneath the earth.