Kokuseiji Tennen Onsen; Bihada no Yu
Fukaya, Saitama, Japan
- Location
- Fukaya, Saitama, Japan
- Water type
- bicarbonate, thermal
- Temperature
- 40 °C
- pH
- 8
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Bihada no Yu, at Kokuseiji Tennen Onsen in Fukaya, Saitama Prefecture, runs alkaline (pH 8) thermal bicarbonate water at 40°C, known locally for its gentle feel on skin. An indoor bath, outdoor rotenburo and sauna round out the facility.
Insider tip — 'Bihada no Yu' (beautiful-skin waters) at Kokuseiji Tennen Onsen in Fukaya, Saitama. Fukaya is the birthplace of Eiichi Shibusawa, now on Japan's 10,000-yen note. The alkaline bicarbonate waters — excellent for silky skin — are a fitting tribute to a city built on the philosophy of diligent cultivation.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 40 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features bicarbonate & thermal water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.