KAI Poroto is located on the edge of Lake Poroto, which is surrounded by the natural forests of Hokkaido, home to many wild birds. With respect to Ainu culture and the Ainu people, indigenous to Hokkaido, the architecture, art, and décor of the property were created by architect, Hiroshi Nakamura. By boldly drawing the lake into the premises as part of the facility, guests will be able to feel close to the lake. “Poroto ko” means “big lake” in the language of Ainu. The building was inspired by “Poroto-kotan” (village of the Ainu people), which has been maintained as a place for passing down Ainu culture. The bathhouse is unique to this property, which incorporates “ketunni” (traditional houses for the Ainu people), a tripod structure using logs, as its basic structure and is located near the lake.