Free entry95°CKusatsu Onsen
Kusatsu · Kanto
One of Japan's most celebrated onsen towns, set at 1,200 meters in the mountains of Gunma Prefecture. The spring output here exceeds 32,000 liters per minute, making it the highest in Japan. The strongly acidic sulfur waters are legendary for their skin-healing properties. Twice a day in the town square, staff perform yumomi: cooling the scalding water with long wooden paddles while singing traditional songs.
Highest spring output in JapanDaily yumomi ritualStrongly acidic sulfur waterFree public bathhouses
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