public bath · Sainokawara Park, Kusatsu, Japan
Sainokawara Rotenburo
Bathhouse bathing is the programme: heat, cold, rest and company in one place, and people come to stay
One of the largest open-air baths in Japan: 500 m² of sulphurous water in a forest ravine, sized for around a hundred bathers at a time, for the price of a coffee.
The full record, with the available operating, price and research data, is free for Bathhouse subscribers.
Venue information
- Address
- Ōaza Kusatsu 521-3, Kusatsu-machi, Agatsuma-gun, Gunma 377-1711
- Neighbourhood
- Sainokawara Park
- City
- Kusatsu, Japan
- Status
- Open
- Access
- Drop-in
Features
- Type
- Public bath
- Heat
- Onsen / hot springs
- Cold
- No cold
- Setting
- MountainThermal springForest
- Access
- Drop-in
- Social model
- Gender separated
How it works
Published: 500 m² open-air bath said to hold about 100 bathers; 07:00 to 20:00 from April to November and 09:00 to 20:00 from December to March, last entry 19:30; separate men's and women's baths, with the men's side opened to mixed bathing on Friday evenings.
Drop-in, no reservation and no session limit.
Frequently asked questions
Where is Sainokawara Rotenburo?
Sainokawara Rotenburo is at Ōaza Kusatsu 521-3, Kusatsu-machi, Agatsuma-gun, Gunma 377-1711, in Kusatsu, Japan.
What does Sainokawara Rotenburo have?
The published features include onsen / hot springs.
How does access to Sainokawara Rotenburo work?
The published access models include drop-in. Check the current schedule and conditions on the official site before visiting.
Is Sainokawara Rotenburo open?
The status recorded by Bathhouse is: Open. The research was updated on 2026-09-01; confirm recent changes with the operator directly.
This space on the map
The map lines this space belongs to, each with an index of its own.
About this research
Desk research updated on 2026-09-01; anything the operator has not published stays open. Bathhouse separates what the operator publishes from what was measured on a visit, and leaves unverified fields empty.