Kusatsu Onsen is famous as one of the three major Onsens in Japan.
It is a very unique Onsen
The temperature of the Kusatsu Onsen water is from 51 to 94 degrees, which is too hot to bathe in. Water stirring known as "Yumomi" is used to lower the temperature without cutting it with cold water.
This unique bathing method of Yumomi (water beating) is a custom that has been passed down since the Edo period. The water from the spring is stirred with boards that are 30 cm wide and 180 cm long while the song is sung. Netsu no Yu, which is located near Yubatake, is recommended for its yumomi and dance show and for events where guests can give it a try.
The Yumomi show is a must experience!
The colour of the hot spring is beautiful emerald green!
The atmosphere of the resort is attractive with the Yubatake (literally means hot water fields, a wooden facility for thermal moderation of the water) located at the centre.
The area is lit up at night.
You should try the Yubatake Souan Ashiyu Cafe where you can enjoy Japanese sweets or coffee / tea while bathing your feet into the Kusatsu Onsen!
There is also a small ski resort in Kusatsu Onsen. The mountain is not big but suited to beginners and intermediates and worth a fun session.
The Ban Zip Tengu is a zipline over the ski slopes and a fun alternative activity.
How do I get there?
By Train: You can catch Hokuriku Shinkansen (bullet train) from Tokyo to Karuizawa station. Then there is a public bus which would take about 75 minutes.
By Express bus: There is an express bus from Tokyo (Tokyo station or Shinjuku) to Kusatsu Onsen bus terminal. It would take about 4 hours.