From National Historic Sites
Fort Union Trading Post National Historic Site
Know Before You Go
- Designation
- National Historic Site
- States
- MT, ND
- Park address
- Williston, ND
- Entrance fee
- No entrance feeNPS data as of 2026-08-25
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Nearby ParkQwest Places
- Theodore Roosevelt National ParkNational Park · Approximately 74 miles away (straight line)
- Knife River Indian Villages National Historic SiteNational Historic Site · Approximately 131 miles away (straight line)
- Little Bighorn Battlefield National MonumentNational Monument · Approximately 233 miles away (straight line)
- Devils Tower National MonumentNational Monument · Approximately 238 miles away (straight line)
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Notes
Designation Date: 06/20/1966
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.