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.

Two people walk in a field towards a white walled Fort.

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!

Man interviewing facing camera, second man watching playback on two small video screens.

Explore Our Digital Media Collection

Learn about the history of Fort Union bay watching our park video and discover other park videos here!

Child playing with wooden Tic-tac-toe board

For Kids

Learn about our Jr. Ranger and Jr. Trader programs and find our do at home activities.

Ranger showing two children an artifact

Curriculum Materials from Fort Union

Find park-related lesson plans and activities to use in your home or classroom.

Map showing acreage of Fort Union Trading Post

Plan Your Visit

Get all the information you need to plan your trip to Fort Union Trading Post NHS!

Men and Women on both horseback and foot walking through hills to Fort Union

Fort Union: The Briefest of Overviews

Explore the history of Fort Union Trading Post here!

Wooden box reads U.M.O, three small round mirrors placed around with FUA Logo in foreground

Fort Union Association - Park Bookstore

Profits generated by purchases donated to and used for interpretation and educational programming at Fort Union

Profile portrait of man, wearing feather headdress, holding feather fan.

Indian Arts Showcase

Experience American Indian history and culture, through music, traditional crafts and lectures by tribal historians and elders.

Canvas tipis in foreground with red roofed bastion in the rear.

2020 Digital Rendezvous

Celebrate Rendezvous at home!

View of active archeological digs.

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.

Last updated: July 16, 2021

Contact the Park

Mailing Address:

15550 Highway 1804
Williston, ND 58801


(701) 572-9083

Contact Us