One of the American Southwest's most extensive collections of Navajo rock art.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

Some 10,000 works of ancient rock art cover these volcanic basalt outcrops near the Gila River.

This memorial pyramid marker honors one of the United States Government's first official camel riders.

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

The unusual burial monument of Arizona's first governor.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

Mark Twain once stopped at this rest station during his journey to Nevada.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

This UFO landing strip was created by a charitable Wyoming city that was worried about residents of Jupiter.

This small town was built around a marble quarry and named after one of the most famous sources of marble in the world.

Rows of 19th-century brick ovens used to process coal into coke form the center of a wooded park.

Using a massive antenna made up of five miles of wire, two scientists tuned into organic radio waves from the planet Jupiter.

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

This small town Texas cemetery is said to be the burial site of a UFO pilot who crashed in the 1800s.

The most powerful laboratory radiation source in the world pulses with 1,000 times the electricity of a lightning bolt.

Crumbling remnants of what was once a booming town full of silver.

A wealth of pop culture statuary and green chile dishes give this roadside restaurant clout.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

This former Mormon settlement is reemerging from the receding waters of Lake Mead.

A smoke stack so large, the Washington Monument could fit inside!

This giant tower beacon was a key navigation tool for pilots delivering mail amid the night skies.

It was once used as a classroom to teach mining skills to local high school students.

The secluded site of a 1943 plane crash and amazing rescue is only accessible by hiking through the woods.