Yamaguchi · Nagato-Yumoto Onsen
Nagato-Yumoto Onsen Onto
長門湯本温泉 恩湯
The source bath of Yamaguchi's oldest hot spring, opened some 600 years ago. Local volunteers rebuilt the aging public bath in 2020; the bathroom sits directly on the spring, so you stand chest-deep in a 1-m pool watching water seep from the bedrock. Around 39°C — made for long soaks. The riverside lounge doubles as a café open to non-bathers. Pair with a stroll through the town redeveloped around Hoshino Resorts' KAI Nagato.
- Price (adult)
- ¥990
- Hours
- 10:00–22:00
- Closed
- 3rd Tue (open if a holiday)
- Access
- 8 min walk from Nagato-Yumoto Station (JR Mine Line)
- Water type
- Alkaline simple
- Tattoos
- Ask ahead
- Phone
- 0837-25-4100
- Official site
- onto.jp ↗
- Open in Google Maps
- Google Maps ↗
Essentials
Stay in this onsen town
Compare and book stays in Nagato-Yumoto Onsen. Day bathing itself needs no booking.
Opens partner booking site (affiliate)
Why go
- Built on the spring, 1-m deep pool
- 600 years old, rebuilt 2020
- 39°C for long soaks
Before you go
- No official tattoo policy is published — ask at reception.
- Last entry is 30–60 minutes before closing.
Features
Mood & scenery
Price
Who with
Amenities
✔ Verified operating: 2026-09 Yahoo!トラベル（990円・10–22時・第3火休）/ onto.jp
Prices and hours change. Check official sources before visiting.
More in this area
Yuda Onsen Kame-no-yu
A hot-spring bathhouse in Yuda Onsen near central Yamaguchi city. In the middle of a town whose legend tells of a white fox healing its wounds here, close to the Nakahara Chuya museum, it offers alkaline simple-spring water for a remarkable ¥390. Open until 23:00, so many finish their tour of the town's free foot baths here. No soap provided. 20 minutes by JR from Shin-Yamaguchi, then 10 minutes on foot from Yuda-Onsen Station.
Yuda Onsen Onsen-no-Mori
A large day-spa at Yuda Onsen in Yamaguchi city. The men's 'Byakko-no-yu' faces a Japanese garden while the women's 'Xavier-no-yu' is Western in style; both offer rotenburo, lie-down and jet baths, a walking pool and sauna. The pH 9.2 alkaline water feels silky. ¥1,000 including a face towel, open 10:00–24:00 every day. Upstairs there's a manga and rest lounge plus a canteen. Ten minutes' walk from Yuda-Onsen Station.
Kawatana Onsen Peaceful Seiryūsen
The municipal bathhouse that serves as the source bath of Kawatana Onsen, Shimonoseki's hinterland spa with some 800 years of history — the Mōri lords bathed here. Sodium-potassium chloride water (source about 41 °C) fills the indoor bath, with an open-air tub and sauna; adult admission is a modest ¥480. Family baths (from ¥1,100 for 80 min weekdays / 60 min weekends) and a rest-room package (¥800) allow a leisurely cure-style visit. Open 10:00–21:00 (last entry 20:30); closed the first Thursday of even-numbered months. Kawatana is the birthplace of kawara-soba, noodles grilled on a roof tile — try it after your bath. An easy stop on the way back from Tsunoshima Bridge.