Mitomi Onsen
- Location
- Mitomi, Yamanashi, Japan
- Water type
- thermal
- Temperature
- 40 °C
- pH
- 7.3
Water profile
Relaxing — deep, immediate muscle release.
Rich in trace elements — gentle on the skin.
Soft water — natural, classic buoyancy.
Mitomi Onsen in Yamanashi Prefecture rises in the mountain terrain of the Nishizawa valley area—home to the spectacular Nishizawa Gorge (Nishizawakei), one of Japan's most celebrated autumn color destinations where the narrow gorge's walls transform into a tapestry of crimson, orange, and gold during the October and November leaf-turning season that draws visitors from across Japan to experience one of the most concentrated displays of autumn color in the country. Simple alkaline waters provide the restorative mineral soak that complements a day of walking the gorge's dramatic trail, where waterfalls, emerald pools, and towering rock walls create an immersive natural experience that the thermal spring extends and enhances. Bathing at Mitomi Onsen after exploring Nishizawa Gorge represents the classic Japanese pairing of autumn landscape appreciation and thermal restoration.