While specific rankings can fluctuate based on seasonal water quality and traveler reviews, the following locations consistently dominate the "Top 13" list for their historical significance and water purity. 1. Kusatsu Onsen (Gunma)
has the highest volume of hot spring water in the world after Yellowstone. The "Hells of Beppu" are for viewing, but the surrounding bathhouses offer world-class Gensenfuro soaking. Dogo Onsen The inspiration for the bathhouse in Studio Ghibli’s Spirited Away gensenfuro 13 top
The represents the pinnacle of Kakenagashi (overflowing) baths, where the water is constantly flowing and never reused. While specific rankings can fluctuate based on seasonal
Pure hot springs are potent; drink plenty of water before and after your soak. The "Hells of Beppu" are for viewing, but
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