Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Tsuyama Onsen is located in Tsuyama City, Okayama Prefecture, the historic castle city that serves as the administrative and cultural center of northern Okayama, where Tsuyama Castle ruins dominate a forested hill above the Yoshii River and the city's preserved samurai residence district (Kakuzan) provides an evocative backdrop of Edo-period architectural heritage. The siliceous thermal waters here complement a city of considerable historical importance in the San'in-Chugoku region, where the Tsuyama Domain's castle town culture is preserved in museums, traditional sake breweries, and the cherry blossom landscape of the castle park — one of Japan's top one hundred cherry blossom viewing sites. Bathing at Tsuyama Onsen in this atmospheric castle city provides a dual cultural and thermal wellness experience, connecting visitors to the proud feudal heritage of northern Okayama's most significant historical city.
Insider tip — Tsuyama Onsen serves the castle town of Tsuyama in central Okayama, where hot spring baths complement the elegant ruins of Kakuzan Castle and its famous cherry blossom park. The smooth bicarbonate water flows at a comfortable temperature ideal for leisurely evening soaks after exploring the historic Johokamachi merchant district. The onsen district is compact and walkable, with several small public bathhouses that preserve a genuinely local atmosphere.