Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Katsuyama Onsen is situated in Katsuyama City, Fukui Prefecture, an area of remarkable geological distinction as the home of the Fukui Prefectural Dinosaur Museum, one of the world's largest paleontological institutions built upon major dinosaur fossil discoveries in the region. The siliceous hot spring waters offer restorative bathing in a city where ancient geological history is celebrated through world-class scientific exhibits and continued excavation sites. Visitors can combine a visit to the award-winning dinosaur museum with a soak in these mineral-rich thermal baths for a uniquely educational and relaxing day in Fukui.
Insider tip — Katsuyama Onsen flows in a city that has become Japan's unlikely dinosaur capital after prolific fossil discoveries in nearby Kitadani Formation strata. The Fukui Prefectural Dinosaur Museum, among the largest of its kind globally, is a short drive from the thermal facilities. Bicarbonate waters at 40°C provide a relaxing post-museum wind-down in a town that blends paleontological wonder with traditional spa culture. The Kuzuryu River valley adds scenic mountain backdrop to the bathing experience.
