The site preserves the second of three forts constructed on the site beginning in 1851, as well as the ruins of the third. Also visible is a network of ruts from the old Santa Fe Trail.
There is a visitor center with exhibits and a film about the Santa Fe Trail. The altitude of the Visitor Center is 6760 feet (2060 m). A 1.2 mile (1.9 km) trail winds through the fort's adobe ruins.
Fort Union ruins
External links
http://www.nps.gov/foun/index.htm - NPS web page for the site