Ena Radium Onsen
Ena, Gifu, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Ena, Gifu, Japan
- Water type
- radioactive
- Temperature
- 38 °C
- pH
- 7.3
Water profile
Thermicity
Neutral
LowHigh
Soothing — neither hot nor cold, perfect balance.
Mineralisation
Bio-active
LowHigh
Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
RadonLithiumBicarbonates
Ena Radium Onsen is located in Ena, Gifu Prefecture, Japan. Its radon thermal water surfaces at 38°C. The site includes an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — Ena Radium Onsen taps radon-bearing springs from the ancient granite geology of the Kiso Mountains — Japanese thermalists prize radioactive springs (放射能泉, hoshano-sen) for alleged anti-inflammatory and immune-boosting effects through low-dose radiation hormesis. Ena is on the historic Nakasendo highway (中山道); the neighboring Nakatsugawa-juku and Magome-juku post towns are the best-preserved Edo-period merchant post towns in Japan, connected by a 8km forest hiking trail past waterwheels and thatched farmhouses.
Nearby
Frequently asked questions
How hot is the water?
The water is neutral here, around 38 °C — a perfect balance, neither too hot nor too cold.
What type of water is found here?
This spot features radioactive water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.