A rather large collection of baths in view of a giant dam along the river. Much more of a thing than the public bath in Misasa Onsen. This is a full nude mixed bathing area. Please be resepctful of any women using the baths. Places like this are quite rare and very unique to Japan. Very fun and relaxing. A must try.
Update January 2020: They now offer rental bathing gowns for women. (¥2000 including a ¥1000 refundable deposit)