Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Naganuma Onsen is located in Naganuma, an agricultural town in the Sorachi Subprefecture southeast of Sapporo, known for its proximity to the spectacular Yuni Flower Garden where millions of lavender, sunflower, and seasonal bloom plants paint the hillside in vivid color during the summer months, making it one of Hokkaido's most photogenic non-coastal attractions. The town sits within the productive agricultural heartland of central Hokkaido, where broad fields of rice, wheat, potatoes, and sugar beets spread across the Ishikari Plain beneath wide skies. The onsen here provide a warm geothermal retreat that pairs perfectly with flower viewing excursions or harvest season agricultural tourism, offering mineral bathing in a genuinely rural Hokkaido setting where the pace of life remains anchored to the rhythms of the seasons and the soil.
Insider tip — Naganuma Onsen draws sodium-chloride waters from the flat alluvial plain east of Sapporo, in a quiet agricultural town celebrated for its sweet corn and rice cultivation. The modest bathhouse serves the farming community and weekend visitors seeking a rural retreat within easy reach of the city. The mineral salt content of the water is mild and pleasant, producing a gentle warming effect well suited to relaxation after outdoor farm work or cycling the flat country roads. Summertime visits coincide with the sweet corn harvest — roadside stalls sell freshly boiled corn just outside the onsen entrance.