Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Itadorigawa Onsen Badehaus takes its name from the Japanese knotweed (itadori)—a plant whose vigorous regrowth from even the most adversarial conditions has made it a symbol of resilience across East Asia—combined with the German word Badehaus (bathhouse), reflecting the Meiji-era influence of German spa medicine and architecture on Japanese thermal facility design. The knotweed's famously aggressive regenerative character provides an apt metaphor for thermal spring bathing, where the mineral waters are valued for their ability to regenerate tired bodies with the same vitality the plant demonstrates in reclaiming disturbed ground. This spring's hybrid Japanese-German name speaks to Japan's unique history of synthesizing European medical science with indigenous thermal spring traditions.
Insider tip — Itadorigawa Onsen Badehaus takes its name from the Itadori River valley in Fukui and its German suffix from the Meiji-era adoption of European bathing culture that gave rise to similar kur establishments across Japan. The bicarbonate spring water is soft and slightly alkaline, recommended for fatigue and skin care. The facility design reflects the hybrid aesthetic of Japanese woodwork and European hydrotherapy pavilions common to this genre. The surrounding Echizen mountain terrain is snow-covered from December to March, making the indoor pools particularly welcoming in the depths of winter.
