Toyama · Uozu / Kintarō Onsen
Kintarō Onsen Karuna no Yakata
金太郎温泉 カルナの館
Ten minutes by car from Kurobe-Unazuki-Onsen Station on the Hokuriku Shinkansen, a large day-spa wing of the lone inn Kintarō Onsen in Uozu. Its sulfur-rich sodium-calcium chloride water is among the most concentrated in Hokuriku, gushing at 1,800 litres a minute. A giant rock bath built from Tateyama boulders, open-air baths, a carbonated bath, rock-bath rooms and four private baths; open daily 8:30–23:30. Admission ¥1,100.
- Price (adult)
- ¥1,100
- Hours
- 08:30–23:30
- Closed
- Open daily
- Access
- 10 min by car from Kurobe-Unazuki-Onsen Station (Hokuriku Shinkansen); shuttle bus from Uozu Station (see official timetable)
- Water type
- Sulfur spring
- Tattoos
- Ask ahead
- Phone
- 0765-24-1221
- Official site
- www.kintarouonsen.co.jp/karuna ↗
- Open in Google Maps
- Google Maps ↗
Essentials
Stay in this onsen town
Compare and book stays in Uozu / Kintarō Onsen. Day bathing itself needs no booking.
Opens partner booking site (affiliate)
Why go
- Hokuriku's richest sulfur-salt water
- 1,800 L/min flow
- Open daily 8:30–23:30
Before you go
- No official tattoo policy is published — ask at reception.
- Last entry is 30–60 minutes before closing.
Features
Sauna & wellness
Rules & private
Who with
Amenities
✔ Verified operating: 2026-09 公式サイト 2026-08（8:30–23:30・年中無休）/ ゆる〜と（1,100円）
Prices and hours change. Check official sources before visiting.
More in this area
Unazuki Onsen Soyu Yumedokoro
The town bathhouse in front of Unazuki Onsen Station, gateway to the Kurobe Gorge Railway. A bright white bathroom with tubs of Kurobe granite holds crystal-clear, mildly alkaline water said to be Japan's most transparent. Just ¥510, with a free foot bath, drinking fountain and rooftop terrace. Easy to fit in before or after the gorge train.
Himi Onsen Soyu
Next to the Himi Banya-gai seafood market near the port famous for winter yellowtail, a day spa fed by its own well 1,250 m down. The brown, strongly saline water flows freely, and on clear days the rotenburo frames the Tateyama range across Toyama Bay. Open 10:00–23:00, from 7:00 on weekends and holidays. ¥950. The classic routine: kaisen-don or conveyor sushi at the market, then a soak.
Unazuki Onsen Tochi-no-yu
A city-run day bath on the shore of the Unazuki dam lake. From the lakeside open-air bath you can watch the Kurobe Gorge trolley train crawl along the far cliff — a favourite with railway fans. Just ¥510 including shampoo and hairdryers, with silky mildly alkaline water. Open only from late April to early December; closed in winter. Five minutes from Unazuki-Onsen Station by the free 'EMU' shuttle or car.