Chiba · Kameyama Onsen (Kimitsu)
Kameyama Onsen Kosuitei Sagawa
亀山温泉 湖水亭 嵯峨和
An onsen inn on the shore of Lake Kameyama in Kimitsu, Chiba. Its spring is a sodium bicarbonate spring, with an open-air bath and indoor bath overlooking the lake (alternating by gender). Known for free bathing with lunch, day bathing is 700 yen.
- Price (adult)
- ¥700
- Hours
- 11:00-16:00
- Closed
- Irregular
- Access
- 614 Sasa, Kimitsu, Chiba. About a 20-minute walk from Kazusa-Kameyama Station on the JR Kururi Line, or about 30 minutes by car from Kisarazu-Higashi IC on the Ken-O Expressway via Route 410. Parking for 40 cars.
- Water type
- Bicarbonate spring
- Tattoos
- Ask ahead
- Phone
- 0439-39-3222
- Open in Google Maps
- Google Maps ↗
Essentials
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Why go
- An open-air bath and indoor bath overlooking Lake Kameyama, both enjoyed via gender alternation
- A sodium bicarbonate spring at a quiet inn on Lake Kameyama, deep in the Bōsō hills
- Day bathing for 700 yen; ordering lunch makes bathing free (150 yen bathing tax extra)
About this onsen
Kameyama Onsen lies on the shore of Lake Kameyama in central Bōsō, Kimitsu, Chiba. Inns have stood here since before the 1937 completion of the dam that created the lake on the Obitsu River, continuing as lakeside onsen inns. Kosuitei Sagawa's spring is a sodium bicarbonate spring, with an open-air bath and indoor bath overlooking the water. The area is also popular as a base for boating, camping, and hiking Mt. Mitsuishi.
Good to know
Day bathing is 700 yen (children 550 yen). Ordering lunch (11:00-15:00) makes bathing free (150 yen bathing tax extra). The open-air and indoor baths alternate by gender. Hours are generally 11:00-16:00, but day bathing may be unavailable on group-booking days, so confirming by phone beforehand is wise. About 20 minutes on foot from JR Kazusa-Kameyama Station, or 30 minutes by car from Kisarazu-Higashi IC.
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
Convenience
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.
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