Fort Union National Monument
PARK OVERVIEW
Fort Union National Monument in Watrous, New Mexico, preserves the ruins of one of the largest and most important forts in the southwestern United States during the mid- to late 1800s. During its 40-year existence, three different forts were built at Fort Union. Each one was constructed to keep up with the changing needs of the United States Army.
On June 28, 1954, President Dwight D. Eisenhower signed the bill to establish Fort Union National Monument as part of the National Park System. The park officially opened to the public on June 8, 1956. Visitors are welcome to walk through the fort ruins and stop inside the Visitor Center to learn about the fort’s history.
OPERATING HOURS
Fort Union National Monument is open year-round from 8 AM to 4 PM, except when closed on New Year’s Day, Thanksgiving, and Christmas. Keep in mind that times can always change, so be sure to check the National Park Service’s official Operating Hours and Seasons web page for the latest schedule.
FEES
There are no fees to visit Fort Union National Monument.
SCHEDULING YOUR TIME
Visitor Center
Allow 30 to 45 minutes
Fort Tour
Allow 1.5 to 2 hours
Walking path through the ruins of Fort Union, Fort Union National Monument
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Last updated on April 8, 2026
