Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Ishi Onsen sits in Aomori City, the administrative capital of Aomori Prefecture and the northernmost major city on Honshu, situated at the gateway to the Tsugaru Strait. Aomori is most famous for the Nebuta Festival, a spectacular summer celebration designated UNESCO Intangible Cultural Heritage, in which enormous illuminated floats depicting mythological and historical figures are paraded through the streets to the sound of taiko drums and Haneto dancers. The sodium bicarbonate waters here offer relaxation amid a city that balances bold festival energy with its role as Japan's premier apple-producing region.
Insider tip — Ishi Onsen is tucked in the hilly interior near Aomori city, close to the Hakkoda volcanic range. The clear bicarbonate spring water warms bathers against the heavy snowfall that blankets this region from November through April. A late-night soak under a snow-heavy roof is an iconic Tohoku winter experience.