Kusatsu is a relatively small onsen town in the mountains of Gunma. Living in the neighboring prefecture, Tochigi, JR had tried their best with ads to get me to Gunma, when I saw pictures of Yubatake I caved. Kusatsu is near a volcano called Shirane and has the most sulphur in its springs out of any other in Japan.



The town has two major public onsen, an onsen musem and a small theater where there are preformances of the traditional way of cooling down hot spring water. The museum is above the bus terminal and has pictures and information about all of the smaller bath houses inthe area, so you may want to go by before. The two major onsen are Sainokawara, which is outdoors, and Otakinoyu, which has many baths of varying temperatures. I opted to do something new and go to Sainokawara.





It was a slightly cool spring day, so the open-air onsen was a great success. The bath is huge and within itself has a gradient of temperatures, the hottest spot was probably as hot as any human could ever ask for. As opposed to the surrounding area and Yubatake, the bath itself didn’t smell so heavily of sulphur.




The biggest issue is getting there, the best option would be to take a Shinkansen to Takasaki, take the local agatsuma line to naganohara-kusatsuguchi from which you can catch a bus to Kusatsu. Assuming one was coming from the terminal Omiya (right outside of Tokyo) it would take about 2 hours & 15minutes (heavily dependent on train and bus times lining up) and cost ¥4770 one way (with unreserved seats). However, if you’re not Japanese you can get the JR Kanto pass for ¥8000 which would cover all except the bus (¥670 one way) and is unlimited riding (in Kanto) for 3 days. It’s definitely something that can be done in a day trip, since I did it in less than a day, and is somethin I would recommend to anyone who has even the slightest interest in onsen.