Fort Union Trading Post National Historic Site is located on the Missouri River. The site is home to a partially constructed historic trading post and military post. The fort was built around 1828 and was an important trading post until 1867.

It was central to the fur trade in Montana and nearby states. Many Native American tribes visited the post to trade furs for other useful items, and a number of historically significant figures visited the site, including John James Audubon, Sha-co-pay, Sitting Bull, and Jim Bridger. Today the fort has been partially reconstructed and exists in the way that the fort may have looked in 1851.

15550 ND-1804, Williston, ND 58801, Phone: 701-572-9083

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