Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Chuo, in the southern Kofu basin of Yamanashi Prefecture, is a small agricultural city set between the renowned Koshu wine vineyards and the Otsuki mountain pass gateway to the Fuji region, in a landscape of terraced peach orchards and grape trellises that produce some of Yamanashi's finest table fruit and Koshu white wine. Chuo Onsen Yamanashi draws on sodium and bicarbonate thermal waters from the geothermal resources of the southern Kofu basin, offering warm restorative baths in an agricultural community where Yamanashi's exceptional fruit production creates a distinctively fragrant seasonal backdrop for thermal wellness throughout the harvest seasons. The spectacular April peach blossom season that turns the Kofu basin pink and white in one of the most extraordinary agricultural flower displays in all of Japan, the nearby Kai Zenkoji Temple, and direct access to the Fuji region via national highway make Chuo an appealingly bucolic spa destination in central Yamanashi.
Insider tip — Chuo city straddles the central Kofu Basin where the Fuefuki River flows through a wide alluvial plain surrounded by 2,000-meter peaks. Bicarbonate springs here are celebrated for their gentle alkalinity that leaves skin exceptionally smooth, sometimes called bihada-no-yu meaning beauty-skin water. The Kofu Basin's hot dry summers and cold clear winters create ideal conditions for both outdoor bathing and stargazing. Access from Tokyo takes under 90 minutes by limited express, making this a superb half-day escape.