Chiba · Inubōsaki & Chōshi
Inubōsaki Hotel (day-use onsen)
犬吠埼ホテル（日帰り温泉）
A hot-spring hotel on the cliffs of Inubōsaki, the easternmost point of the Kantō region. Perched on a cape jutting into the Pacific, its rock rotenburo and European-style open-air bath 'Opia' look out to the horizon and the Inubōsaki lighthouse; on New Year's Day you can watch Japan's earliest sunrise from the tub. The day-use course runs 12:00–19:00 (leave by 20:00), ¥1,500 for a 90-minute stay including bath towel, face towel and toiletries, so come empty-handed. Open daily (special pricing at Obon and New Year). Seven minutes on foot from Inubō Station on the Chōshi Electric Railway; combine with a seafood lunch in Chōshi and the 'Hill Where the Earth Looks Round' observatory.
- Price (adult)
- ¥1,500
- Hours
- Weekdays 12:00–21:00 / weekends & holidays 09:00–21:00 (last entry 20:00) / special days 09:00–17:00 (last entry 16:00)
- Closed
- Open daily (special-day pricing at Golden Week, Obon, New Year)
- Access
- 7 min on foot from Inubō Station (Chōshi Electric Railway); about 60 min by car from Sawara-Katori IC; about 2 h 30 min by highway bus from Tokyo Station to 'Inubōsaki'
- Water type
- Simple spring
- Tattoos
- Ask ahead
- Admission
- Day bathing: adults ¥1,200 weekdays / ¥1,500 weekends & holidays / ¥1,700 on special days (Golden Week, Obon, New Year); children (elementary and under) ¥700/¥900/¥1,100. Wednesday ladies' day (e.g. ¥700 with towel). In summer the admission also covers a small pool
- Baths
- The 'Kuroshio-no-yu' bathhouse faces the Pacific head-on — gender-separated indoor baths, panoramic rotenburo and sauna. An endless horizon by day; at night the beam of Inubosaki Lighthouse sweeps the outdoor bath. A large resort hotel with parking for 250
- Water
- Sodium-chloride strong brine, marketed as 'the salt bath for beautiful skin', drawn from Early Cretaceous strata 1,300 m down. Pale yellow and clear, salty, with strong heat retention — it feels hot. Recirculated and heated
- Parking & access
- Free parking for 250 cars. About 5 min on foot from Inubo Station on the Choshi Electric Railway (about 20 min from JR Choshi). From Tokyo Station, the JR Sobu Line limited express 'Shiosai' reaches Choshi in about 1 h 50 min. About 1 h from Sawara-Katori IC on the Higashi-Kanto Expressway
- Phone
- 0479-22-8000
- Official site
- inubou.co.jp ↗
- Open in Google Maps
- Google Maps ↗
Essentials
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Why go
- Pacific-view baths at Kantō's eastern tip
- Japan's earliest sunrise from the tub
- ¥1,500 with towels — come empty-handed
Kanto's easternmost cape, where the year's first sun rises — 'Kuroshio-no-yu', a Pacific-view rotenburo brushed by the lighthouse beam
Inubosaki Hotel is a large resort hotel on the cliffs of Inubosaki in Choshi, Chiba — the easternmost point of the Kanto region and, mountaintops aside, the first place in Japan to see the sunrise — looking straight out over the Pacific. Its 'Kuroshio-no-yu' spring is a sodium-chloride strong brine pumped from Early Cretaceous strata 1,300 m down; branded 'the salt bath for beautiful skin', the pale-yellow salty water holds heat so well that you stay warm long after. From the gender-separated indoor baths and panoramic rotenburo you see the sea running to the horizon by day, and at night the beam of the adjacent Inubosaki Lighthouse sweeping across the water every 15 seconds — the first name that comes up when people in the Tokyo area want a 'seaside onsen'. Although a hotel, it welcomes day bathers generously (from 12:00 on weekdays, 9:00 at weekends, until 21:00), and at five minutes' walk from Inubo Station on the Choshi Electric Railway it can be done as a rail day trip from Tokyo via the 'Shiosai' express; in summer the admission includes a small pool, making it popular with families. Prices vary by day (¥1,200 weekdays / ¥1,500 weekends / ¥1,700 special days).
Tips & notes
① Prices and hours differ by day — weekdays start at 12:00, and special days (Golden Week, Obon, New Year) finish at 17:00. ② Expect day-use limits or queues at the New Year sunrise and in high summer. ③ To see the lighthouse beam from the rotenburo, come after sunset — from 17:00 in winter. ④ The strong brine feels hot and stings cuts; remove silver jewellery. ⑤ Check the official site and social media for deals such as Wednesday ladies' day. ⑥ Choshi Electric Railway trains run only 1–2 an hour — confirm your return train and the 'nure-senbei' shop hours first. ⑦ Neighbouring Inubosaki Kanko Hotel and Hotel New Daishin on the same cape also take day bathers — alternatives when crowded.
Getting there
From Tokyo Station, the JR Sobu Line limited express 'Shiosai' reaches Choshi in about 1 h 50 min (a few a day; local trains with a change at Chiba take about 2 h 30 min); then the Choshi Electric Railway about 20 min to Inubo, 5 min on foot. By car, about 1 h from Sawara-Katori or Taiei IC on the Higashi-Kanto Expressway via Routes 356 and 126, about 2 h 30 min from central Tokyo; free parking for 250. Combine with Inubosaki Lighthouse, the 'Earth Looks Round' observatory hill and seafood at Choshi fishing port for a day trip or overnight. For a Tokyo day return, check the last 'Shiosai' first.
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.
- 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.
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