Fort Abercrombie State Historic Site
Abercrombie, ND
Fort Abercrombie was established in 1857 as the first permanent United States military post in what is now North Dakota and was nicknamed the Gateway to the Dakotas. During the U.S.-Dakota War of 1862, the fort withstood a siege of more than six weeks. Today the State Historical Society of North Dakota operates the site, including reconstructed blockhouses and the original guardhouse.