Located in MT, ND.
Between 1828 and 1867, Fort Union was the most important fur trade post on the Upper Missouri River. Here, the Assiniboine and six other Northern Plains Tribes exchanged buffalo robes and smaller furs for goods from around the world, including cloth, guns, blankets, and beads. A bastion of peaceful coexistence, the…
Use this page to check live NPS alerts, weather, things to do, events, fees, campgrounds, and build a day-by-day itinerary with Trailie.
Loading park…

Trailie
Tell Trailie your dates, pace, and interests — get a day-by-day Fort Union Trading Post National Historic Site plan with hikes, drives, and must-see stops.
Explore this park
No current alerts or closures for this park.
Common questions
The summary above covers timing and highlights. These go deeper on reservations, crowds, and logistics.
Reservation rules vary by season and activity for Fort Union Trading Post National Historic Site. See Overview on this page for fees, timed entry, and campground details before you travel.