Last updated: May 27, 2025
The Grandest Fort on the Upper Missouri River
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 post annually traded over 25,000 buffalo robes and $100,000 in merchandise.
Top 10 Tips for Visiting Fort Union
Are you ready to explore Fort Union Trading Post NHS? Use these 10 tips to plan your trip like a Ranger!
Plan Your Visit
Get all the information you need to plan your trip to Fort Union Trading Post NHS!
Fort Union Rendezvous
Come and participate in the upper Missouri’s finest fur trade fair at one of the West’s grandest historic sites!
Calendar
Find all Fort Union's special event dates here.
Fort Union: The Briefest of Overviews
Explore the history of Fort Union Trading Post here!
Unearthing the Past, Discovering Today
How was the fort built and from what materials? Archeologists needed to unearth the answers before the fort could be accurately rebuilt.
Explore Our Digital Media Collection
Uncover Fort Union's rich history and explore our visual media collection for more fascinating content!
For Kids
Learn about our Jr. Ranger and Jr. Trader programs and find our do at home activities.
Things to Do
Learn all the available activities at Fort Union.
Fort Union Association - Park Bookstore
Profits generated by purchases donated to and used for interpretation and educational programming at Fort Union