Tennen Onsen; Nanaehama no Yu
Illustration photo — not a verified picture of this exact spot.
- Location
- Hakodate, Hokkaido, Japan
- Water type
- bicarbonate
- Temperature
- 40 °C
- pH
- 8
Water profile
Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Soft water — natural, classic buoyancy.
Tennen Onsen Nanaehama no Yu is a naturally sourced bicarbonate hot spring facility whose poetic name — 'Nanaehama' evoking a layered or multi-tiered shoreline — suggests a setting where the warmth of geothermal mineral water meets the atmospheric beauty of a Japanese coastal or lakeside landscape. Bicarbonate-rich spring waters are known in Japanese bathing culture as 'bijin no yu' (beautiful woman's hot spring) for the way they leave the skin feeling soft: the alkaline mineral content gently smooths the skin's texture and imparts a luminous softness that is among the most sought-after qualities in Japanese onsen tradition. Whether literally coastal or simply evocative of the sea through its name, Nanaehama no Yu offers an onsen experience that layers the pleasures of bicarbonate mineral immersion with the quiet poetry of Japan's deep connection to water, shore, and natural beauty.