The facilities of the former Hokkaidō Government Office in Sapporo, Japan, include a conference room, a museum shop, a tourist information office, and a few historical exhibition rooms and libraries. Visitors can enter the building for free. Flower gardens and a pond are located in front of the building, which occasionally are designated as some event venues.
In 1869, the Kaitakushi, the development commission and government of Hokkaidō prefecture, was established to pioneer the primitive ground of Hokkaidō, and its main office was moved to Sapporo in 1871. An American advisor to the Development Commission, Horace Capron, planned to construct the building for the Kaitakushi office with an octagonal dome topping on the building, which was popular architectural style in the United States at that time. The building, named as the Hokkaidō Development Commission Sapporo Main Office (開拓使札幌本庁舎 Kaitakushi Sapporo Honchōsha), was built in 1873, and was then one of the largest buildings in Japan. It was destroyed by fire in 1879.
After the abolition of the Kaitakushi in 1882, Hokkaidō was divided into a number of prefectures, and later the Hokkaidō Government was established in 1886. The destroyed building was restored, and the new government office building was inaugurated in 1888, with red bricks and the octagonal dome on top of the building as the first governor, Michitoshi Iwamura, had suggested.
In 1896, air vents and the octagonal dome on the top were taken away. Fire destroyed the building again in 1909, and the inside was burnt down, while the walls of the building with red bricks sustained little damage. In 1910, restoration work of the building began, and was completed in 1911.
The Government of Hokkaidō Prefecture commemorated its 100th anniversary in 1968, and original air vents and the octagonal dome were restored and installed to the building again to commemorate the anniversary, and government determined to continue preserving the building permanently. The following year, the building was listed as one of the National Important Cultural Properties. In 1985, the Archives of Hokkaidō was housed in the building. The Karafuto/Sakhalin Related Resource Library, which had been located in the Hokkaidō government office annex in West 18 since 1992, was also placed in the building in 2004.
The measurement of the building is 61 metres in frontage, 36 metres in depth, and 33 metres in height to the top of the tower. 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.