
Misasa Onsen Kawaraburo
onsen
三朝温泉河原風呂
A free open-air riverside onsen with world-class radium content, bathe under the stars in the middle of a river.
In the middle of the Misasa River, a simple stone-walled rotenburo sits right at water level, free and open 24/7. Misasa's hot springs have the highest radium content in the world (believed to boost immunity), and this riverside bath is the most authentic way to experience them. At night, the stars overhead and the sound of the river create pure serenity.
The bath is mixed-gender and fully exposed. Locals bathe at night for more privacy. Bring a small towel. The water temperature varies by season.
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