An abandoned quicksilver mining town surrounded by the Big Bend parks.

An incredible airplane graveyard sits outside this small museum dedicated to preserving aviation history.

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

Once disputed as the largest sundial in the world.

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.

The sea once considered an ecological wasteland is now called "crown jewel of avian biodiversity" by scientists.

At this deceptively beautiful beach, nothing is what it seems.

Swarms of butterflies cannot compare to the awe inspired by the publicly-funded nakedness once displayed in this sunken garden.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

The lobby of this hotel near the U.S.-Mexico border features a stained-glass mural that measures 42 feet long and 6 feet tall.

Located near the U.S.-Mexico border, this park remembers the famous raid of General Francisco “Pancho” Villa and his soldiers.

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.

Once called the Jersey Lilly, this former saloon was the domain of infamous Judge Roy Bean.

The second largest roadrunner in the world stands 11 feet tall in his West Texas town.

A spring-fed pool so deep it's used for scuba diving as well as swimming.

Bringing back the art of handmade custom coffins.

The so-called "Father of Las Vegas" had the city's first telephone installed in his office in 1907.

This arid landscape was once a lush wetland. Today, it's a paleontological site filled with fossilized mammoths, sabertooth cats, and more.

Water of undetermined depth has attracted rare fish and cult leaders alike.

340 bicycles, 65 feet high.

A sparse, solitary sequoia still stands as a living tribute to the famous conservationist who planted it—but it's dying.

This abandoned boat was left in place thanks to its rotting beauty.

An enchanting tunnel of cypress trees leads to an old morse code station still used today.

The mysterious round rocks of Schooner Gulch.