Tsuta Onsen
- Location
- Towada, Aomori, Japan
- Water type
- bicarbonate, silica, carbonated
- Temperature
- 40 °C
- pH
- 6.3
Water profile
Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Mineralised water — eases movement and joints.
Tsuta Onsen in Aomori Prefecture—Ivy Spring—is one of Tohoku's most celebrated hidden gems, where bicarbonate, siliceous, and naturally carbonated waters emerge amid ancient beech forest to create a spring of exceptional mineral complexity and natural beauty in the deeply wooded Towada-Hachimantai volcanic region of Japan's northern Honshu highlands. The triple mineral profile delivers the effervescent stimulation of carbonated spring water, the skin-softening luxury of silica-rich bathing, and the gentle alkaline warmth of bicarbonate minerals—a combination that has earned Tsuta a devoted following among connoisseurs of Japan's most therapeutically sophisticated spring types. The ivy-draped beech forest surrounding the spring and the extraordinary natural atmosphere of this corner of Aomori's mountain wilderness make Tsuta one of Japan's most complete expressions of the hikyoto (hidden spring) ideal.