Fort Union National Monument

Fort Union
Exposed to wind, within a sweeping valley of short grass prairie, amid the swales of the Santa Fe Trail, lie the territorial-style adobe remnants of the region’s largest 1800s military fort. Between 1851 and 1891, Fort Union acted as an agent of political and cultural change throughout the Southwest.

3115 NM-161
Watrous, NM 87753
United States

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505-425-8025

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Fort Union
Fort Union
Fort Union
Fort Union
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Discover Fort Union National Monument

Fort Union photo

Step onto the windswept plains of northern New Mexico and explore the remnants of Fort Union, once the largest military post in the region. Established in 1851, this fort played a vital role in protecting travelers along the Santa Fe Trail and maintaining a military presence in the Southwest. Today, visitors can walk among the preserved adobe walls, follow wagon ruts from pioneers long past, and imagine life on the frontier. With its rich history, striking landscape, and deep ties to the Santa Fe Trail, Fort Union National Monument offers a fascinating glimpse into the American West.

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From mugs to ornaments, our keepsakes make perfect gifts for all ages. Every purchase supports the parks!

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Fort Union National Monument Ramsey Mug

$27.99

Fort Union National Monument Cap

$24.99

Fort Union National Monument Collectible Coin

$12.99

Fort Union National Monument Book

$5.99

Historic Cannon Mini Block Set

$10.99
Ancient adobe ruins under a bright blue sky with scattered clouds.

6 days across the West

Explore historical sites, dramatic landscapes, and the beauty of the American Southwest with this six-day road trip from Oklahoma to New Mexico.

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Visit smart

Walk the Fort Ruins Trail

This self-guided tour takes you through the remnants of barracks, storehouses, and defensive walls.

See the Santa Fe Trail ruts

The original wagon ruts from 19th-century travelers are still visible, preserving a tangible link to the past.

Visit in spring or fall

Summers can be hot and windy, so cooler seasons provide a more comfortable experience.

Stop by the visitor center

Learn about the fort’s military and trade history through exhibits and ranger programs.

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Upcoming events

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Fort Union Day

Jun 7 10:00 am – 11:30 am

This annual event will feature two special 90-minute programs featuring living history and encampment!

71st Anniversary of Fort Union National Monument

Jun 21 10:00 am – 11:00 am

Celebrate with us during a 60-minute program.

Fort Fashions & Pastimes

Jul 12 10:00 am – 10:45 am

Discover 1800s clothing styles and leisure activities and how they related to economics and social structure. 45-minute program.

Lantern-Lit Legacies

Aug 9 8:00 pm – 8:45 pm

Why preserve these ruins? Discover this site's legacy as the sun has set and lanterns now shine during this 45-minute tour. (Historic area only open for this tour's participants after 4:00 pm on these dates. Park gates will re-open for these evening...

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Our contribution

Over $162 million

Since our founding in 1938, WNP has provided more than $162 million in aid to our partner parks to fund educational programs, initiatives, and scientific research.

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