Yu-sa Asamushi Roadside Station — Hadaka-yu Panoramic Bath

Mutsu Bay head-on for ¥360 — an observation bath on the 5th floor of the roadside station by the platform

Asamushi Onsen, on the Mutsu Bay coast east of Aomori city, is a thousand-year-old spa town — legend credits the Heian monk Ennin with its discovery — long known as “Aomori’s inner parlour”. On the 5th floor of the roadside station “Yusa Asamushi”, right in front of the railway station, is the observation bath Hadakayu. Its layout could not be simpler — one indoor bath per gender — but a full wall of glass looks straight out over the calm bay to the little island of Yunoshima, and that view makes up for everything. Sunset behind Yunoshima, or soaking while snow falls on a winter sea, are scenes you get only in Aomori. The water is a sodium-calcium sulphate-chloride spring, clear, soft and warming, so you stay warm long after even in a winter wind. Admission is public-bathhouse cheap at ¥360 for adults and ¥160 for children — among the lowest in Aomori city with a top-class view, which is why locals and travellers alike love it. It reopened in March 2025, had its tubs fully restored in November 2025 and now operates normally; occasional inspection closures are posted on the official site. The ground floor has an Aomori-products shop and a farmers’ market (apples, scallops, blackcurrant goods), and the 4th floor a free rest area, handy while waiting for a train. Two minutes on foot from Asamushi-Onsen Station on the Aoimori Railway and 20 minutes from Aomori Station, it makes a fine “last onsen” before the Shinkansen at Shin-Aomori, or a half-day outing with Asamushi Aquarium and a Yunoshima boat trip. Open from 7:00, so a morning bath is possible too.

Tips & cautions

- 7:00–21:00 (last entry 20:30); open daily except a two-day inspection in February and occasional closures — check the official site’s notices.

- No soap or shampoo — bring your own or buy from the vending machine. Towels sold.

- No rotenburo or sauna — know that it is “one indoor bath with a view”.

- The glass faces the sea and is designed not to be seen from outside; sunset angles differ between the men’s and women’s baths.

- Tattoos: a public roadside-station facility with no confirmed policy — ask at the desk.

- The station platform is windy in winter — time your exit to the train.

- Combine with Asamushi Aquarium (10 min walk), Yunoshima boat trips (Apr–Oct) and the seaside footbath.

- The view beats the sento-style onsen around Aomori Station by a mile — come here if you have time.

Getting there

~2 min on foot from Asamushi-Onsen Station (Aoimori Railway), Asamushi Hotarudani 341-19, Aomori. ~20 min by train from Aomori Station, ~30 min from Shin-Aomori (change at Aomori). By car ~30 min from Aomori Station via Route 4, ~45 min from Aomori Airport; free roadside-station parking. Tel. 017-737-5151.