This hot spring area, located at the mouth of the Matsukawa River, is the oldest known onsen in Hokkaido. The area is dotted with hotels, inns and restaurants situated amidst a peaceful residential area overlooking the Straits of Tsugaru. The area is also a popular swimming spot during the summer. On summer and autumn nights, the lights of the town and of the squid fishing boats reflecting on the water create a peaceful atmosphere. Getting there from JR Hakodate Station takes only 40 minutes by streetcar to the Yunokawa Onsen Station.