Where are the best onsen hot springs in Japan? I believe it is Kusatsu Onsen. This is without a doubt one of the onsen areas many Japanese would like to visit once in their lives, and I was no exception.
Last fall, I made the 3-hour trek via train and bus to this hot spring mecca. At JR Ueno Station, I hopped on the Tokkyu Kusatsu, a limited express train, bound for the JR Naganohara-kusatsu-guchi Station. It was about 2.5-hour ride, then a 30-minute bus ride to the Kusatsu Bus Terminal.