Kusatsu hot springs
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The Kusatsu hot springs (草津温泉 Kusatsu Onsen?) are located in the Gunma Prefecture of Japan, north west of tokyo. They are a popular tourist destanation.
The springs were a well known resort for centuries but they became one of the best known of such locations after the water there was recommended by Erwin von Baelz a German doctor for its health benefits.[1]