Fort Union
- New Mexico
photo: DarkSky International
Fort Union National Monument, located near the New Mexico-Colorado border, is a historic site where the Santa Fe Trail intersected with the Old Spanish Trail. Originally designed as a symbol of American power, it later became a vital protector of settlers and trade. Beyond its military role, the fort influenced the region's culture and history through interactions with Native American and Hispanic communities. Today, the adobe wall ruins of the largest 19th century military fort in the region stand as a testament to its transformative legacy, offering visitors a glimpse into this unique chapter of American history.