Yume Tamatebako is a day-use hot spring facility attached to Hotel Fugetsu in Beppu City. It prides itself on a wide variety of baths using Kannawa Onsen’s characteristic sodium chloride spring, including a hinoki cypress bath, a reclining bath, and a jet bath. In addition to a spacious dry sauna, the facility offers its signature box steam bath. This Japanese-style sauna uses hot spring steam so you can sweat comfortably while keeping only your head outside. After cooling down in the soft cold plunge bath chilled to 16°C by a chiller, you can enjoy outdoor rest by sitting on the edge of the box steam bath in the open-air area.