Otohime-sama Onsen; Benzaiten no Yu
Aso, Kumamoto, Japan
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- Location
- Aso, Kumamoto, Japan
- Water type
- thermal, sodium chloride
- Temperature
- 40 °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
Otohime-sama Onsen, also known as Benzaiten no Yu, is located in Aso, Kumamoto Prefecture. Its sodium-chloride water reaches around 40°C, with an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — 'Benzaiten no Yu' at Otohime-sama Onsen (乙姫様温泉 — Sea Dragon Princess spring) in Aso city. Otohime is the sea dragon king's daughter from the Urashima Taro fairy tale — she rules an underwater palace of eternal youth and beauty. Benzaiten (弁財天) is the goddess of all flowing things — water, music, eloquence, time — one of the Seven Lucky Gods. In the volcanic caldera of Aso, where the earth itself flows in slow molten streams beneath the surface, invoking the goddesses of water and flow is deeply appropriate.
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 thermal & sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.