Kusatsu Onsen · Saino-kawara area
Saino-kawara Rotenburo
How to get there and what to see · facts checked 2026-10-24
One of Japan’s largest open-air baths, about 500 square metres for men and women combined. The scenery changes with the seasons.
- Nearest station
- 20 min walk from Kusatsu Onsen Bus Terminal
- Hours
- Apr 1–Nov 30: 7:00–20:00; Dec 1–Mar 31: 9:00–20:00 (last entry 19:30)
- Admission
- Adults ¥800; children ¥400 (age 3 to elementary school)
What to see
- Size: roughly 500 square metres of open-air bath, men’s and women’s sides together.
- Seasonal views: fresh green, autumn leaves and snow. In the evening Maruyama hill is lit up.
- Mixed bathing on Fridays: every Friday, with a bathing garment worn.
Seasons
- Fresh green, autumn colour and snow views change with the seasons.
Getting there
About a 20-minute walk from Kusatsu Onsen Bus Terminal.
Address：521-3 Kusatsu, Kusatsu Town, Agatsuma District, Gunma
Before you go
On the second Wednesday of each month it closes at 17:00 (last entry 16:30) for cleaning: Nov 11, Dec 9, Jan 13, Feb 10, Mar 10. Occasional maintenance closures too.
Sainokawara and Otakinoyu
Tap a red pin to open that sight's page.
Nearby sights
← Kusatsu Onsen guide: trains from Tokyo
Sources
Hours, prices and history come from the official websites and public tourism pages listed here. They can change, so check the official site before you go.
- 草津温泉観光協会（西の河原露天風呂）（checked 2026-10-24）
- 草津温泉観光協会（お知らせ 西の河原露天風呂の営業時間変更）（checked 2026-10-24）
Map data：© OpenStreetMap contributors