Kizuna no Yu; Sakaiseki Onsen
Hirosaki, Aomori, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Hirosaki, Aomori, 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
Kizuna no Yu, known as Sakaiseki Onsen, is a bathhouse in Hirosaki, Aomori. Sodium-chloride water heated to 41°C feeds an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Kizuna no Yu, the spring of human bonds, carries special resonance in a Tohoku community still healing from the memory of the 2011 Great East Japan Earthquake. Sakaiseki, the boundary stone, marks the historical border between old villages, and this spring has long served as a meeting point between neighbouring communities.
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.