Iiyama Yutaki Onsen, located in Iiyama, Nagano Prefecture, is a natural hot spring that wells up on the banks of the magnificent Chikuma River. From the open-air baths you can fully enjoy the seasonal views of the Chikuma River: cherry blossoms in spring, deep greenery in summer, autumn foliage, and snowy winter landscapes. In addition to a skin-friendly alkaline simple hot spring, the facility is fully equipped with a sauna and a cold plunge bath.