The Great Northern Depot is celebrating its 105th birthday this week. You may know the building as the home to the Beltrami County History Center, but the brick and mortar offers a ton more to history buffs. “Well, it was opened to the public in 1912. It actually went under construction in 1911 and it was a key transportation hub for about 70 years,” says Andy Mack, a volunteer at the center and railroad history buff. The 215 foot-long depot houses a basement and an extensive attic.