
Hidden deep in the misty valleys of Totsukawa, Kamiyu Onsen is a secluded riverside hot spring famous for its highly alkaline, skin-smoothing waters. It offers a truly rustic, off-the-beaten-path experience where you can soak in open-air baths directly alongside the rushing river. Expect a peaceful, no-frills atmosphere surrounded by dense forest, far away from Japan's crowded tourist hubs.
Bring your own towel and cash for the entry fee, as the facilities are highly traditional and do not accept credit cards.



