Niigata · Iwamuro Onsen, Niigata
Iwamuro Onsen Yorinare
岩室温泉 遊雁の湯 よりなれ
A city-run day spa (Niigata City Iwamuro Health Promotion Centre) at Iwamuro Onsen, a spa at the eastern foot of Mt. Yahiko in Niigata's Nishikan ward, often called 'Niigata's back parlour'. Set on a rise at the edge of the spa town, its main bath and open-air bath look out over the Echigo plain toward Mt. Kakuda and Mt. Yahiko. The indoor pool is heated tap water, but the small rock-lined outdoor tub is fed with rich, free-flowing sulfur-bearing sodium-calcium chloride spring (hypertonic, mildly alkaline) whose faint sulfur scent and floating mineral flakes feel unmistakably like real onsen. Admission is ¥650 for adults and ¥390 for children, and a face and bath towel set is included, so arrive empty-handed. Open 10:00–20:00 (last entry 19:30), closed the second and fourth Wednesdays (next day if a holiday) and 29 December to 3 January. An upstairs lounge allows re-entry, and there are rental rooms and a snack corner; free parking for 80 cars. About 10 minutes by car from Iwamuro Station on the JR Echigo Line or 20 minutes from Maki-Katahigashi IC. Pair it with Yahiko Shrine and Niigata's sake breweries.
- Price (adult)
- ¥650
- Hours
- 10:00–20:00 (last entry 19:30)
- Closed
- 2nd & 4th Wednesdays (next day if holiday); Dec 29–Jan 3
- Access
- About 10 min by car from Iwamuro Station (JR Echigo Line); about 20 min by car from Maki-Katahigashi IC on the Hokuriku Expressway; about 50 min by car from JR Niigata Station
- Water type
- Sulfur spring
- Tattoos
- Ask ahead
- Admission
- Adults (junior-high+) ¥650, children (elementary and under) ¥390 (revised from the former ¥500 with towel set). Discount for Niigata City residents aged 65+. Rooms for hire: 8-mat room ¥2,600 per 3 hours, 31.5-mat hall ¥7,800 per 3 hours (reservation). Lockers, soap, shampoo and dryers included
- Baths
- A public bath inside the Niigata City Iwamuro Health Promotion Centre. For each sex, an airy glass-walled indoor bath (a large rectangular pool and a long narrow one — heated tap water, not onsen) and a small rotenburo that uses the hot-spring water. No sauna. Hall and rest area included, paid private rooms, shop, no restaurant. Tatami rest room
- Water
- Iwamuro's chloride spring (sodium chloride type, source pH about 5.8, roughly 11,490 mg/kg of dissolved solids excluding gases — a strong brine). Only the rotenburo uses the spring water, diluted, heated and chlorinated (no recirculation). Iwamuro Onsen opened in 1713 as a post-town spa on the Edo-period Hokkoku Kaido and is also known as the 'spring of the sacred goose'. Indicated for cuts, poor circulation, dry skin and joint pain
- Parking & access
- Free parking for 40–80 cars. About 10 min by car from Iwamuro Station on the JR Echigo Line (Nishikan ward loop bus available). About 25 min via Route 460 from Maki-Katahigashi IC on the Hokuriku Expressway. About 50 min by car from central Niigata; 15 min to Yahiko Shrine
- Phone
- 0256-82-2270
- Official site
- niigata-kankou.or.jp ↗
- Open in Google Maps
- Google Maps ↗
Essentials
Find a stay on Trip.com
Search and book accommodation across Japan on Trip.com. Day-use bathing needs no booking.
Opens partner booking site (affiliate)
Why go
- Hilltop city spa with Echigo plain and Yahiko views
- Rich free-flowing sulfur spring in the outdoor tub
- ¥650 incl. towel set – come empty-handed
Niigata City's inexpensive public bath at Iwamuro Onsen
Yugan-no-yu Yorinare is the bath house of the 'Iwamuro Health Promotion Centre' built by Niigata City in Iwamuro Onsen, Nishikan ward — a spa that flourished from the Edo period as a post town on the Hokkoku Kaido. 'Yugan' recalls the 1713 founding legend of a wounded wild goose seen bathing in the spring (the 'spring of the sacred goose'), and 'yorinare' is Niigata dialect for 'do drop in'. As a public facility on a hill a little away from the inns it has no glamour, but for ¥650 it offers an airy glass-walled indoor bath, a rotenburo fed by Iwamuro's strong brine and a tatami rest room, serving as the locals' everyday bath and an easy stop for visitors to Yahiko and Iwamuro.
Heated water indoors, the real spring in the rotenburo
Know before you go that the big glass-walled indoor bath (a large rectangular pool and a long narrow one) is heated tap water, not onsen; the spring water is used only in the small rotenburo. Iwamuro's source is a strong sodium chloride brine of about 11,490 mg/kg excluding gases, but it is diluted to top up the volume, heated and chlorinated, so those hoping for the raw concentration may find it a little tame. Even so, a soak outside brings the salty taste and long-lasting warmth of a chloride spring that helps cuts and cold sensitivity — so make the rotenburo your focus. There is no sauna. Afterwards you can sprawl in the hall and tatami rest room included in the price, and families and groups habitually hire the 8-mat room (¥2,600 per 3 hours) and bring their own lunch boxes.
Practical details and an Iwamuro–Yahiko route
Hours are 10:00–20:00 (last entry 19:30); closed the second and fourth Wednesdays (next day if a holiday; the fourth Wednesday and Thursday in June and September) and 29 December–3 January. Adults ¥650, elementary and under ¥390 — revised from the former ¥500 that included a towel set, so bring a towel (soap, shampoo, dryers and lockers are included). There is no restaurant, so bring a lunch box or eat in the spa street. Ten minutes by car from JR Iwamuro Station, 25 from Maki-Katahigashi IC, with ample parking. Combine it with the free foot bath among Iwamuro's inns, Yahiko Shrine and the Mt Yahiko ropeway (15 minutes by car) and the Kakudahama coast for a half-day in western Niigata; compared with the larger 'Dairo-no-yu' nearby (free-flowing, sulphurous), Yorinare is the cheaper, quieter choice.
Before you go
- No official tattoo policy is published — ask at reception.
- The water runs hot (43–45°C). Don't add cold water; take short repeated dips instead.
- Payment is usually by ticket machine in cash — bring coins.
- Last entry is 30–60 minutes before closing.
Features
Mood & scenery
Price
Who with
Amenities
✔ Verified operating: 2026-09 Operating status and rates cross-checked against the official site and onsen guides (full source notes in Japanese on the JA page)
Prices and hours change. Check official sources before visiting.
More in this area
Yuzawa Onsen Egami Public Bath
A locals' public bath three minutes from the east exit of Echigo-Yuzawa Station, tucked into the shopping street. Indoor pool only, but the slightly hot, soft water that clings to the skin gets praise. Shampoo is provided and a towel set costs ¥400, so you can drop in empty-handed while waiting for the shinkansen. ¥600 since December 2025.
Tsukioka Onsen Bijin-no-izumi
Forty minutes by car from Niigata city, the communal bath of Tsukioka Onsen, which bills itself as the spring that 'makes you beautiful'. The emerald-green water has one of the highest sulfur contents in Japan — you smell it the moment you step in. Indoor pool only, ¥600. On the edge of the ryokan street and popular with locals. 25 minutes by bus from Shibata Station. Closed Tuesdays and the third Wednesday.
Tsukioka Onsen Furinya
An hour by car from Niigata city, a ryokan in Tsukioka Onsen, famed for water that 'makes you beautiful'. Its emerald-green spring, among the most sulfur-rich in Japan, fills indoor and open-air baths, and day use runs late — 15:00–23:00 — so you can soak while the garden is lit up. ¥800 on weekdays (¥1,000 with towel), +¥200 on weekends and holidays. Combine with the free footbath and spring-source park in the village.
