Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Dense, salty water — you float without effort.
Ami Onsen serves a town in Ibaraki Prefecture positioned between the science city of Tsukuba and the vast reed marshes of Lake Kasumigaura, where the flat agricultural landscape of central Ibaraki gives way to the lake's shimmering expanse — one of Japan's most important freshwater ecosystems and a designated Ramsar wetland that shelters wintering whooper swans, great white pelicans, and dozens of other migratory species each winter. The Ami Premium Outlets draw shoppers from across the greater Tokyo region, yet the town retains the quiet agricultural character of a community whose economy is still rooted in the rice paddies and market gardens that extend in every direction across the Kanto Plain's fertile lowlands. The onsen's siliceous thermal waters, drawn from the mineral-rich geology underlying this productive agricultural plain, provide a genuinely local wellness resource in a community shaped by the combined influences of the lake, the land, and the nearby science city.