Kannabe Tennen Onsen; Grand no Yu
Illustration photo — not a verified picture of this exact spot.
- Location
- Fukuyama, Hiroshima, Japan
- Water type
- bicarbonate, 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.
Kannabe Tennen Onsen Grand no Yu is a naturally sourced bicarbonate and carbonated hot spring facility in the Kannabe area, drawing on volcanic geology to produce waters whose dual mineral profile delivers the skin-softening benefits of bicarbonate alongside the circulatory stimulation of natural carbonation — one of the most therapeutically versatile combinations in Japanese onsen science. Carbonated thermal waters are particularly valued in Japanese balneotherapy for their ability to dilate surface blood vessels, improve oxygen delivery to skin and muscle tissue, and produce the characteristic warm, tingling sensation known as the 'tansan onsen' effect that lingers pleasurably long after bathing. The 'Grand' in the facility's name signals an ambitious scale of bathing amenity — multiple pools, varied water temperatures, and comprehensive facilities — designed to make the most of this mineralogically exceptional natural spring water.