Kaizu Onsen is located in Kaizu, Gifu prefecture. Its thermal water at 40°C feeds an indoor bath and an outdoor rotenburo; a sauna rounds out the facility.
Insider tip — Kaizu sits on the Nobi Plain near the Ibi and Kiso rivers. This community spa draws a loyal local crowd and is an ideal rest stop when cycling the river levee trails or visiting the historic castle towns of western Gifu.