Hanno Onsen Saitama
- Location
- Hanno, Saitama, Japan
- Water type
- bicarbonate
- Temperature
- 40 °C
- pH
- 8
Water profile
Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Soft water — natural, classic buoyancy.
Hanno Onsen Saitama is a natural hot spring in Hanno, a city at the border of Saitama and Tokyo prefectures, accessed via the Seibu Ikebukuro railway line from central Tokyo and serving as one of the most popular mountain retreat destinations accessible directly from the capital, where the Hanzawa and Iri rivers create a network of forest gorges, waterfalls, and hiking trails within the transitional zone between the Kanto Plain and the Chichibu mountains. The naturally bicarbonate-enriched spring waters here are valued for their alkaline, skin-smoothing properties and are particularly welcomed by Tokyo urban hikers and families escaping the city heat, offering a restorative mineral soak after exploring Hanno's forest trails and the nearby Musashinomitake Shrine with its 3,000-year-old history. As one of the most conveniently accessible nature and hot spring destinations from central Tokyo, Hanno Onsen serves as a vital urban wellness escape deeply appreciated by the millions of residents of Japan's metropolitan capital.