Nanasawa Onsen-kyo
- Location
- Atsugi, Kanagawa, Japan
- Water type
- thermal
- Temperature
- 38 °C
- pH
- 7.3
Water profile
Soothing — neither hot nor cold, perfect balance.
Rich in trace elements — gentle on the skin.
Soft water — natural, classic buoyancy.
Nanasawa Onsen-kyo is a hot spring cluster located in Kanagawa Prefecture on the edge of the Tanzawa mountain range, occupying a strategic position that makes it one of the most accessible mountain onsen destinations for urban residents of the greater Tokyo metropolitan area seeking natural thermal bathing within easy reach of Japan's most densely populated corridor. The designation onsen-kyo, meaning hot spring valley or village, signals a concentration of multiple springs and bathing facilities gathered within a single locale, offering visitors a variety of thermal water experiences that reflect the geological diversity of the Tanzawa highlands. Nanasawa Onsen-kyo's proximity to metropolitan Japan and its forested mountain setting have made it an essential part of Kanto's weekend wellness and leisure culture for generations of city dwellers seeking restorative immersion in natural geothermal springs.