— Trevor Share Your Story Flag as offensiveGet a Park Passport. It's an inexpensive souvenir, and a good reminder of your visit. Our family loves to collect them.
Fort Union Trading Post National Historic Site
Fort Union Trading Post was the most important fur trading post on the upper Missouri from 1828 to 1867. At this post, the Assiniboine, Crow, Cree, Ojibway, Blackfeet, Hidatsa, and other tribes traded buffalo robes and other furs for trade goods such as beads, guns, blankets, knives, cookware, and cloth. Today, the reconstructed Fort Union represents a unique era in American history, a brief period when two different civilizations found common ground and mutual benefit through commercial exchange and cultural acceptance.