Fort Union Trading Post is a 0.65-kilometer historic trail located in Bainville, Montana, at 574.7 meters elevation. This immersive walking experience features 59 scenic viewpoints that showcase one of the most significant fur trading posts of the 19th century American West, positioned along the renowned Lewis & Clark National Historic Trail. Visitors can explore reconstructed buildings and learn about the vital role this outpost played in frontier commerce and Native American relations.