Tsurumaki Onsen
- Location
- Tsurumaki, Odawara, Kanagawa Prefecture, Japan
- Water type
- calcium-rich
- Temperature
- 41 °C
- pH
- 7.3
Water profile
Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Soft water — natural, classic buoyancy.
Tsurumaki Onsen—Crane Scroll Spring—in Hadano City, Kanagawa Prefecture, is served by the Tsurumaki-Onsen Station of the Odakyu Electric Railway's Odawara Line, making it one of the most conveniently railway-accessible thermal springs in the greater Tokyo metropolitan area and a popular day-trip destination for Tokyoites who can reach the spring directly from Shinjuku without transferring. The calcareous mineral waters carry calcium carbonate character typical of limestone-influenced geological formations, providing a distinctly different mineral profile from the more common alkaline or sulfurous springs of Japan's volcanic highland tradition—a gentle, skin-smoothing mineral soak of particular accessibility and clarity. The crane scroll name, combining Japan's most auspicious longevity bird with the elegant imagery of a rolled document or artwork, gives this conveniently urban-accessible spring a quality of refined, cultured aspiration within the commuter rail landscape of modern Kanagawa.