Aomori Aomori City
A historic toji inn with five sources of its own flowing into a vast hall built entirely of hiba
Sukayu Onsen Ryokan is a historic onsen inn tucked into the Hakkoda Mountains of Aomori City, Aomori Prefecture. In 1954 (Showa 29) it was named Japan’s first National Health Resort Onsen, and it remains one of the country’s most celebrated baths. Its vast mixed-bathing main bathhouse, Hiba Sennin-buro, is built entirely of hiba, and there are also separate indoor baths for men and women. Water from five sources of its own, rising right on the grounds, is lavishly fed straight from the source, never recirculated. The milky, strongly acidic sulfur-bearing water seeps powerfully into the skin as you soak, wrapped in steam and the scent of hiba. A restaurant serving the inn’s famous soba and rooms set up for proper toji (long therapeutic bathing stays) let you refresh body and mind deep in the wild.

A mixed-bathing main bathhouse spanning a full 160 tatami mats, built entirely of hiba. Four different sources, Netsu-no-Yu, Hie-no-Yu, Shibu-Rokubu-no-Yu and Yutaki, well up steadily, and the scent of hiba and drifting steam fill the enormous hall, which has not a single pillar. The milky, strongly acidic sulfur-bearing water seeps powerfully into the skin, and your whole body can feel the power of a sacred spring that has soothed toji guests for 300 years. Out of consideration for mixed bathing, there are women-only hours in the morning and evening, and dedicated bathing wear is available to rent.

Small hiba baths, separate for men and women, drawing on a source of their own distinct from Hiba Sennin-buro. With washing stations and showers, they let you soak at ease even if mixed bathing isn’t for you. As in Sennin-buro, milky, acidic sulfur-bearing water is fed straight from the source, never recirculated, so you can relax in the warmth of the wood as the heat slowly reaches your core.
Bathing available 24 hours; women-only hours in the main bathhouse (8:00–9:00, 20:00–21:00) (Day-use bathing) Mixed-bathing main bathhouse Hiba Sennin-buro 7:00–18:00 / Separate men’s and women’s small baths Tama-no-Yu 9:00–17:00
Members of antisocial organizations, and guests with tattoos that may disturb other guests, are not permitted to bathe.
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