Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Dense, salty water — you float without effort.
Kaminoyama Onsen in Kaminoyama City, Yamagata Prefecture is distinguished by the honor of having its own dedicated railway station — Kaminoyama Onsen Station on the JR Ou Main Line — a recognition of the spring's historical and cultural significance among Yamagata's celebrated cluster of thermal destinations that reflects the deep integration of onsen culture into Japanese civic and transport infrastructure. The spring has been in use since the fifteenth century and played a formative role in the development of Yamagata's onsen culture, drawing visitors from across the Tohoku region to its pure, simply mineralized waters over a history of more than five hundred years. Today Kaminoyama Onsen seamlessly combines this deep historical thermal heritage with the modern convenience of direct rail access, welcoming travelers who arrive by train to a living tradition of Japanese bathing culture embedded in the mountain landscape of the Yamagata basin.