Fort Union National Monument
National Monument · New Mexico

Fort Union National Monument

Photo: Eric T Gunther · CC BY 3.0 · Wikimedia Commons

Fort Union was the largest US military post in the region from 1851 to 1891, guarding the Santa Fe Trail and shaping life across the New Mexico Territory, including for the Native nations it fought. Today a 1.25-mile trail winds through wind-worn adobe walls, with Santa Fe Trail ruts still visible on the prairie. It is exposed and windy, so bring a hat, water and a jacket.

Good to know

Tickets
Free. There is no entrance fee.
Time needed
1 to 2 hours for the visitor center and trail.
Best time
May to October. Winter is cold and windy on the open prairie.
Getting there
Watrous is about 8 miles away, off I-25. Santa Fe is about 1.5 hours away by car; Albuquerque International Sunport is about 2 hours.

Where to stay nearby

Gateway towns with hotels and food, close to the park entrances:
Watrous, New Mexico
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Fort Union National Monument questions

Can you see Santa Fe Trail ruts at Fort Union?

Yes. Some of the clearest wagon ruts on the whole trail are visible from the monument grounds.

Why is Fort Union in ruins?

After the Army left in 1891, its adobe buildings were stripped and weathered for decades before the site was protected in 1954.

Is Fort Union worth the detour from I-25?

Yes, if you like history. It is a short drive off the interstate and rarely crowded.

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