Tennen Onsen Furusato no Yu
Ageo, Saitama, Japan
- Location
- Ageo, Saitama, Japan
- Water type
- sodium chloride
- Temperature
- 41 °C
- pH
- 7.3
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Furusato no Yu, in Ageo (Saitama prefecture), heats natural sodium-chloride water to 41°C. The onsen has an indoor bath, an outdoor rotenburo bath, and a sauna.
Insider tip — Tennen Onsen Furusato no Yu is a 'hometown bath' in Ageo, a suburban city north of Tokyo in Saitama Prefecture, drawing natural saline water from deep Kanto plain sedimentary aquifers. The warm sodium-chloride water retains body heat effectively, making it a popular retreat for urban residents seeking respite from city stress. Its nostalgic 'hometown' branding evokes the old-fashioned sento culture of rural Japan, despite its suburban setting. The baths are accessible by train from central Tokyo, making it an easy day-trip escape.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 41 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).