Saga · Karatsu & Niji-no-Matsubara
Narukami Onsen Nananoyu
鳴神温泉 ななのゆ
A day-trip onsen in the forest at Nanayama, Karatsu. A strongly alkaline simple spring at pH 10.1, known as a silky beauty bath. ¥740 for adults, ¥640 after 17:00.
- Price (adult)
- ¥740
- Hours
- 10:00–21:00 (last entry 20:30)
- Closed
- 1st Tuesday of the month
- Access
- ~15 min by taxi from JR Chikuhi Line Hamazaki Sta.; ~10 min from Nishi-Kyushu Expwy Hamatama IC
- Water type
- Alkaline simple
- Tattoos
- Ask ahead
- Spring
- A strongly alkaline simple spring at pH 10.1, silky and smooth on the skin, known as a beauty bath.
- Admission
- ¥740 for junior-high age and over, ¥370 for children aged 4 and up; after 17:00 the evening rate is ¥640 and ¥320. Prices include bathing tax, facility use and tax.
- Family baths and closure
- Family baths are ¥1,560 per hour on arrival (first come, first served) or ¥2,100 per hour by phone reservation, plus admission for each person. The facility closes on the first Tuesday of each month, which may shift when it falls on a holiday.
- Phone
- 0955-70-7070
- Official site
- 7noyu.jp ↗
- Open in Google Maps
- Google Maps ↗
Essentials
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Why go
- Silky beauty spring at pH 10.1
- Open-air bath in the forest
- Evening rate of ¥640 after 17:00
A strongly alkaline spring in the forest at Nanayama
Narukami Onsen Nananoyu is a day-trip facility surrounded by greenery at Nanayama in Karatsu. Its water is a strongly alkaline simple spring at pH 10.1, loved as a beauty bath for its silky feel. Alongside the great bath there are an open-air bath, a sauna and family baths, so a visit can be spent enjoying the changing seasons. It lies within driving distance of the Nijinomatsubara pine grove and Karatsu Castle, making it an easy stop mid-itinerary.
Hours and tips
Hours are 10:00 to 21:00 with last entry at 20:30, and after 17:00 the evening rate lets adults bathe for ¥640. Closure falls on the first Tuesday of each month and may move when it coincides with a holiday. Family baths cost ¥1,560 per hour on a first-come basis at the desk, but a phone reservation secures one for ¥2,100 per hour. Parking for 100 cars is free, and access from the Nijinomatsubara area is straightforward.
Before you go
- No official tattoo policy is published — ask at reception.
- Payment is usually by ticket machine in cash — bring coins.
- Last entry is 30–60 minutes before closing.
Features
Sauna & wellness
Rules & private
Who with
Price
Convenience
Mood & scenery
Amenities
✔ Verified operating: 2026-10 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
Takeo Onsen Motoyu
Beyond the vermilion gate (a National Important Cultural Property) stands one of Japan's oldest surviving wooden bathhouses, built in 1876. Open from 6:30 am until late, ¥500.
Ureshino Siebold-no-yu public bath
A Gothic-style public bath recreating the Taishō-era 'Koyu Onsen'. Ureshino's silky bicarbonate water — one of Japan's 'three great skin-beautifying springs' — for ¥450, 6 am to 10 pm. Tatami rest room upstairs and private baths (¥2,500/50 min).
Ureshino Gensen Hyakunen-no-yu
One minute from the Ureshino bus centre, the only day-spa in town with its own source (formerly Motoyu Onsen). Silky bicarbonate water — one of Japan's 'three great beauty baths' — in a large indoor bath, open-air pool and sauna. Many family baths (from ¥1,800/50 min + entry). Open 9 am–10 pm.
