Fort Union National Monument
New Mexico
Free entry
Exposed to the wind, within a sweeping valley of short grass prairie, and along the eroded Santa Fe Trail, lie the adobe walled ruins of the largest 19th century military fort in the region. From 1851 to 1891, Fort Union functioned as an agent of change, desired or not, in the New Mexico Territory and throughout the Southwest.
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No entrance fee.
Hours
The monument grounds and visitor center are generally open 7 days a week, from 8:00 AM - 4:00 PM. The monument is closed Thanksgiving Day, Christmas Day, New Year's Day.
Conditions
Weather now: ⛅ Partly cloudy, 67°F
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☁️ 88°/58°
Visitor centers
Fort Union National Monument Visitor Center
Not an official safety source — always defer to NPS.gov and rangers for life-safety decisions.
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