This site honors the end of a 100-year boundary dispute between the United States and Mexico—all started by a river's shifting course.

A modernist landscape of water and sci-fi concrete.

Belly up to the bar in Cowtown, don't forget to buy some boots.

This downtown Dallas art installation is always on the lookout.

A serene temple with stunning stained glass hides in downtown Dallas.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

This church on a Tohono O'Odham reservation has stood since 1797.

The former home of the army detachment that captured Geronimo.

This old abandoned sign flickers to announce a motel that isn't even there.

A little stop along the Texas highway where Rock Hudson, Elizabeth Taylor, and James Dean stayed while shooting the 1955 film "Giant."

Minimalist modern art on a repurposed military base in rural Texas.

A Prada store in the West Texas desert that is never open for business.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

A museum dedicated to the alleged Roswell Incident.

A blacklight journey through a celestial art exhibit.

This is one really big nut.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

Most-visited and most-photographed slot canyon in the American Southwest.

This ancient cave is home to a museum, bar, and is filled with fluorescent minerals.

Ancient pueblos built into the base of a natural canyon wall.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

The remains of Abó, Gran Quivera, and Qurai are monuments to the long, complicated history of the Indigenous people of the Southwest.

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.