This sign designates the road that leads to the infamous Area 51.

The drama of nature in full effect in this Nevada State Park.

Dramatic river bend surrounds a natural red-rocked pedestal.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

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

This sinkhole in the Arizona desert is filled with carbonated, arsenic-rich water

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

These petroglyphs created by ancient Arizonians have withstood centuries of exposure to the elements.

Every year, festive decorations appear on this juniper tree located in the median strip of a busy highway.

These free-roaming horses were once destined to disappear from the land.

A reproduction of earth's many biomes.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

The largest copper mine in Arizona, this enormous open pit emerges from the hills like an alien landscape.

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

This quirky hot springs town known to locals as "T or C" was named after a radio show.

The state bird of New Mexico, constructed entirely out of garbage.

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

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

This strategically-placed fountain creates the magnificent illusion of mustangs galloping across a river.

A fitting attraction for the corn capital of the world.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

Just a man taking his prehistoric pet for a stroll.