Shima Onsen Nakanojo
- Location
- Nakanojo, Japan
- Water type
- calcium-rich, silica
- Temperature
- 38 °C
- pH
- 7.1
Water profile
Soothing — neither hot nor cold, perfect balance.
Loaded with major ions — the essential minerals (Ca, Mg).
Soft water — natural, classic buoyancy.
Nakanojo Onsen serves the mountain town that acts as gateway to the celebrated Agatsuma onsen cluster of Gunma Prefecture, an inland highland region renowned across Japan for the exceptional quality and variety of its geothermal spring waters flowing from the volcanic highlands between Kusatsu and the Shima valley. The town hosts the extraordinary Nakanojo Biennale, a contemporary art festival that installs international artworks in the surrounding depopulated hamlets, farmhouses, and mountain landscapes, transforming the entire rural district into an outdoor gallery every two years. The onsen's mineral-rich waters connect visitors to a town that has found creative strategies to bring art and thermal tradition together in the context of rural Gunma's remarkable natural and cultural landscape.