Located in Chikuma, Nagano Prefecture, Yunohana Sento Zuisho Kamiyamada Honkan is a full-scale day-use onsen where you can enjoy two different free-flowing hot spring sources from Togura Kamiyamada Onsen: an alkaline simple sulfur spring and a simple sulfur spring. The facility features an indoor rock bath with towering boulders, a sulfur-scented open-air bath, a dry sauna, and cold plunge baths fed by well water, including both indoor baths and an outdoor single-person tub bath.