Abashiri Kohan Onsen

Abashiri Kohan Onsen flows with sulfate-rich thermal waters in the eastern Hokkaido lakeside landscape of Abashiri City, known throughout Japan as the location of the famous Abashiri Prison — now a museum — and as one of the northernmost cities in the country where drift ice from the Sea of Okhotsk piles against the coastline each winter in one of Japan's most dramatic seasonal natural spectacles. The spring's sulfate mineral composition reflects the volcanic sulfate chemistry of the region in a setting where the extreme cold of Hokkaido's northernmost inhabited zone makes the naturally heated mineral warmth of a volcanic spring particularly welcome for residents and visitors who brave the drift ice conditions of the Okhotsk coast. Abashiri Kohan Onsen's sulfate waters and its extraordinary northern setting — where drift ice, historic prison heritage, and volcanic thermal water coexist in a single destination — create a bathing experience of unusual geographical and atmospheric drama that defines Hokkaido's most distinctive frontier thermal character.