Sarobetsu Onsen Hokkaido

Sarobetsu Onsen, in the town of Toyotomi on the vast Sarobetsu Plain of northern Hokkaido, offers sulfurous thermal bathing in one of Japan's most extraordinary natural landscapes — the Sarobetsu Genshi-koen, a primordial moor stretching to the horizon where cotton grass, alpine flowers, and rare orchids bloom across peat bogs extending as far as the eye can see, with the volcanic peak of Rishiri Island rising like a dream above the Sea of Japan on the western horizon. The naturally warm sulfurous waters provide restorative bathing in this remote agricultural plain, where the hot spring resort has developed alongside lavender and dairy farming in the cool subarctic climate of northern Hokkaido. The Sarobetsu wetlands, designated as a Ramsar Convention protected site for their extraordinary biodiversity — including migratory cranes, whooper swans, and white-tailed eagles — make this one of Japan's most ecologically spectacular onsen settings.