A natural hot spring sourced from an alkaline simple sulfur cold mineral spring that harmonizes with the surrounding rich nature. The large communal bath has expansive glass windows that let in abundant natural light, creating an open atmosphere. From the open-air baths you can look down over the seasonal splendor of Nakatsu Gorge and bathe while listening to the river. The water has a soft feel and leaves skin smooth after bathing, making it a beautifying hot spring. It helps ease everyday fatigue and neuralgia, deeply soothing both body and mind. The men's and women's bathing areas are switched weekly, allowing guests to enjoy differing scenery.