Spread out in front of the Koitoi coast in Hokkaido, "Roadside Station Shiranuka Koimunkan" is a facility where you can enjoy a comfortable car trip with a function as an RV park (*1), which is rare at a roadside station, and is equipped with showers, saunas, and laundromats. There are also restaurants that use local ingredients from Shiranuka Town, and on a clear day, you can overlook the beautiful scenery of the Koimun Coast from the "Azumashi Living" with a view of the sea and the observation deck on the second floor. In addition, based on Shiranuka Town's idea of "supporting child-rearing in Japan", the facility is equipped with a children's family space (Kokko Park). We participated mainly in the planning work of this project as a consortium member, and after being commissioned, we promoted the work as a member of the construction JV (*3), and handled a wide range of tasks such as interiors design and sign planning. *1 A sleep-in facility certified by the Japan RV Association. *2 DBO (Design, Build, Operate): One of the public-private partnership methods in which design, construction, maintenance, management, and operation are comprehensively ordered from private companies. *3 Joint venture system. A business organization formed by multiple companies for the purpose of receiving and construction a single construction project.