The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A one-of-a-kind sundial at the Very Large Array honors a radio astronomy pioneer, incorporating the original piers from his breakthrough radio telescope.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

The ruins of this former mining boomtown once housed over 3,000 people. Now, the population is two.

The outcropping is graffitied with the name of the beloved musical Muppet television series.

Some of the Old West's most notorious outlaws frequented this mining town.

In a largely deserted ghost town, a little brick building recalls its history as a gold rush hub and haven for outlaws.

The highest point in Texas is capped by a big silver pyramid.

The site of Billy the Kid’s most famous escape and the end to the Lincoln County War.

The final resting place of the living embodiment of the famous Forest Service symbol.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

This 1950s-era nostalgic roadside New Mexico attraction consists of a quirky curio store and museum embedded into the face of a cave.

A unique gallery filled with art that is interactive, accessible, and generates a ripple effect of creativity

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

Recycling meets art in this colorful barricade.

This small canyon park was once the main street of Silver City—until a flood washed it away.

Hidden in the Chihuahuan Desert resides an amazing collection of petroglyphs.

This old army installation has worn many hats throughout its history.

More than 21,000 images fill this overlooked gem of a prehistoric site.

These unique volcanic rock formations offer the perfect opportunity to camp and hike.

This cheery fruit farmer welcomes visitors to a classic roadside emporium.

This is one really big nut.

Home of the International Space Hall of Fame.

A surprise blip of color and kitsch.