Question: where are the onsen in japan?
Answer: Kusatsu Onsen, Gunma. Kusatsu Onsen (hot springs) is one of Japan's most popular hot spring resorts. ... 
Hakone Onsen, Kanagawa. ... 
Yufuin Onsen, Oita. ... 
Kurokawa Onsen, Kumamoto. ... 
Beppu Onsen, Oita. ... 
Gero Onsen, Gifu. ... 
Noboribetsu Onsen, Hokkaido. ... 
Kinosaki Onsen, Hyogo.