Old Mesilla & Las Cruces — Plaza Adobe, Gadsden Purchase & Wine Country Roots

The shaded adobe plaza at the heart of Old Mesilla is one of the most significant historic sites in the Southwest. It was here, in 1854, that the flag was raised to formalize the Gadsden Purchase — the deal that transferred roughly 30,000 square miles of what is now southern New Mexico and Arizona from Mexico to the United States, fixing the modern border. For a time Mesilla was the largest town between San Antonio and San Diego, a stop on the Butterfield Overland Stage and a Confederate territorial capital during the Civil War. The plaza's low adobe storefronts, wrapped around a central bandstand, remain almost unchanged; Billy the Kid was tried and sentenced to hang in the old courthouse on the plaza's southeast corner in 1881. Wander the surrounding streets on foot to feel a frontier town preserved rather than reconstructed.

Anchoring the north side of the plaza, the twin-towered Basilica of San Albino is the spiritual heart of Mesilla and one of the oldest churches in the Mesilla Valley, with a parish dating to 1852. The current brick Romanesque Revival structure was completed in 1908 atop the footprint of the original adobe mission, and in 2008 Pope Benedict XVI elevated it to the rank of minor basilica — a rare distinction. Inside, hand-carved wooden pews, imported stained glass, and a pipe organ fill a cool, hushed sanctuary. Step in between services to appreciate the craftsmanship, then take in the view back across the plaza from the front steps.

On the eastern edge of Las Cruces beneath the jagged Organ Mountains, this 47-acre living-history museum tells 3,000 years of New Mexico agriculture, from ancient Puebloan farming and Spanish colonial ranching to modern chile and pecan production. Indoor galleries hold saddles, wagons, and a strong collection tracing the region's cattle and sheep heritage, while the outdoor grounds keep live longhorns, dairy cows, sheep, and heritage crops. Daily demonstrations — blacksithing, milking, tortilla-making, and cowboy skills — bring the working landscape to life, and the museum's ties to nearby New Mexico State University, the region's land-grant agricultural college, run deep. Allow a couple of hours to walk the barns, corrals, and heritage gardens.