An extremely rare mixed open-air bath in Japan, featuring a private spring with a fresh emerald hue and water flowing directly from the source. The water, which rises from the ultra-deep Devonian strata, combines the appeal of a bicarbonate spring with skin-beautifying benefits and a chloride spring whose warmth lasts long after bathing. In the spacious mixed open-air bath surrounded by nature, you will find cascading waterfall baths, jet baths, and even a deeper cave bath. Since guests wear dedicated bathing garments, families and couples can enjoy this mysterious hot spring without hesitation.

A mixed outdoor bath reserved for staying guests, quietly situated along the Hirayu River a little way from the main building. It inherits a sacred spring quality said to have once been used by the Emperor for hot-spring therapy, allowing you to enjoy an exceptional bathing experience while listening to the murmuring of the Hirayu River flowing right in front of you. With an overwhelming sense of openness that blends into the dramatic scenery of untouched nature, it is a luxurious space where you can leave behind the noise of the city and calmly sharpen your senses.

A reservation-only private open-air bath where staying guests can have exclusive use of the spring water. Without worrying about anyone else's eyes, you can quietly enjoy this famous hot spring while gazing at Okuhida's dramatic natural scenery with someone special. Soaking your whole body in the warmth of a high-quality private spring and spending time surrendering yourself to the beautiful changes of the seasons will become a wonderful highlight of your trip. It promises a leisurely, exceptional private time.