Tokushima · Ōboke Onsen
Ōboke Onsen Sunriver Ōboke
大歩危温泉 サンリバー大歩危
A hot-spring hotel on the banks of the Yoshino River in the Ōboke–Koboke gorge, where the water has carved through 200-million-year-old rock. The strongly alkaline simple spring — locals say it makes skin toner unnecessary — leaves skin smooth, and the gorge-facing main bath and open-air bath look out over the Koboke rapids, said to be Japan's wildest, and the mountainsides in their seasonal colours. Day bathing: adults ¥700, children ¥350, 12:00–21:00 (last entry 20:00); open daily, but on Saturdays, holidays and group-booking days it may close from 15:00, so check ahead. A convenient base for the Ōboke sightseeing boats, the yōkai museum and the drive to the Iya vine bridge; about 15 minutes on foot from JR Ōboke Station (pick-up available). Soap provided, towels for a fee.
- Price (adult)
- ¥700
- Hours
- 12:00–21:00
- Closed
- Open daily (may stop from 15:00 on Sat & holidays)
- Access
- About 15 min on foot from JR Ōboke Station (pick-up available on request); about 30 min by car from Ikawa-Ikeda IC via Route 32
- Water type
- Alkaline simple
- Tattoos
- Ask ahead
- Phone
- 0883-84-2111
- Official site
- http://www.oobokeonsen.jp ↗
- Open in Google Maps
- Google Maps ↗
Essentials
Stay in this onsen town
Compare and book stays in Ōboke Onsen. Day bathing itself needs no booking.
Opens partner booking site (affiliate)
Why go
- Bath above the Koboke rapids
- Strongly alkaline 'skin-toner' water
- ¥700; 15 min walk from Ōboke Station
Before you go
- No official tattoo policy is published — ask at reception.
- Ryokan day-use hours are limited and may be suspended in peak season — phone the same morning.
- Payment is usually by ticket machine in cash — bring coins.
- Last entry is 30–60 minutes before closing.
Features
Mood & scenery
Sauna & wellness
Price
Amenities
✔ Verified operating: 2026-09 公式サイト（大人700円・12–21時 受付20:00・土曜祝日は15時以降休止の場合あり）
Prices and hours change. Check official sources before visiting.
More in this area
Hotel Iya Onsen (cable-car bath)
A five-minute ride down a 42-degree cable car to the bottom of the Iya gorge, where a self-flowing bath sits beside the river. Day use 7:30–17:00, cable car included. A member of the Secret Onsen Preservation Society.
Iyakei Onsen Hotel Hikyo-no-yu
Five minutes by car from the Kazurabashi vine bridge, the day-use bath of a large hotel at the mouth of the Iya Valley — the biggest bathhouse in Iya, with a rotenburo facing the green gorge, indoor pool and sauna. At ¥1,100 it's a cheaper, later-opening alternative to Hotel Iya Onsen's cable-car bath (¥1,900). 20 minutes by car from Oboke Station. Closed Tuesdays.
Hotel Kazurabashi – Sky Open-Air Bath
Five minutes by car from the Kazurabashi vine bridge, this popular Iya inn is famous for its 'sky open-air bath' reached by private cable car. Day bathing (¥1,200) runs 10:30–16:00; the goemon cauldron baths are for overnight guests only. A free sky footbath on the viewing deck is spectacular on mornings with a sea of clouds. With Hotel Iya Onsen it forms Iya's pair of 'cable-car onsen', ideal for a break while touring the valley.