Kogane to Suiso no Yu; Huis Ten Bosch Tennen Onsen
Sasebo, Nagasaki, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Sasebo, Nagasaki, 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
Kogane to Suiso no Yu (Huis Ten Bosch Tennen Onsen), in Sasebo, Nagasaki, near the Dutch-themed park, offers sodium-chloride water at 41°C, with an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Kogane to Suiso no Yu, the gold and colour spring, sits within Huis Ten Bosch — Japan largest theme park by area, a meticulously reconstructed Dutch village with windmills, canals, and Vermeer tulip gardens built on the Sasebo coast in 1992. Adjacent to the US Naval Base Sasebo that anchors the city economy, Huis Ten Bosch creates a surreal juxtaposition of simulated Netherlands, Japanese onsen culture, and American military infrastructure in one extraordinary Nagasaki bay complex.
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.