 The red bricks used in the wall of the building were made in Toyohira and Shiroishi villages, which are currently wards of Sapporo (as Toyohira-ku and Shiroishi-ku), and the number of the bricks in the walls is around 2.5 million.There are 20 paintings inside of the building, which depict historically important scenes in the history of Hokkaidō.Most of the windows are double-paned, to keep out the freezing climate of Sapporo.