Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Dense, salty water — you float without effort.
Uchiko Onsen is found in Uchiko, a beautifully preserved merchant town in the Oda River valley of Ehime Prefecture whose immaculate historic townscape of whitewashed merchant residences, sake breweries, and traditional wax workshops has made it one of Shikoku's most beloved heritage destinations — a town where the prosperity generated by the Japanese wax (mokuro) trade in the late Edo and Meiji periods is preserved in the architecture of the Yōkaichi Old Town district, where walls of traditional plaster and dark-timbered facades have been maintained in near-pristine condition as a living example of the prosperous merchant culture that once made Uchiko the commercial center of central Ehime. The Uchikoza kabuki theater, an original wooden playhouse dating to 1916 and still in regular use, stages performances of traditional drama and puppet theater that connect contemporary audiences with the theatrical traditions of this once-prosperous merchant town. The onsen here provide silica-rich mineral bathing in a town where historical architecture, artisanal craft heritage, and living theater tradition make every visit an encounter with Shikoku's preserved merchant past.