It houses several facilities. The Archives of Hokkaidō contains a number of historical materials related to Hokkaidō, and the annex building of the archives is currently located in West 5, which is close to the former office building and previously functioned as the Library of Hokkaidō (the library was moved and is currently located in Ebetsu). The Gallery of Hokkaidō's History was designed to display panels and historical instruments used in farms and cultivation, and is a branch exhibition room of the Historical Museum of Hokkaidō. The Karafuto/Sakhalin Related Resource Library showcases materials related to Karafuto, which used to be the northernmost area of Japan and has been part of Russia as Sakhalin Oblast since the end of World War II.