Kozaki Onsen
- Location
- Katori (Kozaki), Chiba Prefecture, Japan
- Water type
- sodium chloride
- Temperature
- 41 °C
- pH
- 7.3
Water profile
Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Dense, salty water — you float without effort.
Kozaki Onsen is located in Kozaki Town, Chiba Prefecture, in the Tone River lowlands of northern Chiba where the flat agricultural landscape of the Kanto plain extends toward the shores of Kasumigaura — Japan's second-largest lake — and the traditional sake brewing culture of the Kozaki area has produced some of the Kanto region's most distinctive and historically important sake breweries, including the Shinoishiya sake brewery established in the Edo period. The siliceous thermal waters here provide wellness facilities in a rural agricultural community where the calm flatland landscape of the Tone River basin, traditional sake production, and hot spring bathing create a distinctively low-key and unhurried Chiba interior experience. Bathing at Kozaki Onsen in this flat, river-defined landscape of sake culture and agricultural prosperity offers a gentle and restful counterpoint to the more dramatic coastal and mountain onsen of the surrounding region.