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

An artificial crater field that trained astronauts for lunar exploration.

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

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

A spiritual vortex among the red rocks in Sedona.

The world's largest military aircraft cemetery.

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

See massive fossils that are over 200 million years old in northeastern Arizona.

A self-built castle made by a mysterious man.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This highest peak in New Mexico is named after an explorer who had a habit of lending his monicker to peaks.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

These aggressively sustainable art homes look like something out of 1970's science fiction.

Legends surround this jagged rock formation in the New Mexico desert.

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

A museum dedicated to the alleged Roswell Incident.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

An Ecuadorian haberdashery that sets the record straight about the so-called "Panama" hat.

66,000 pieces of art, donated by one of the world's richest men.

Diego Rivera's massive tiled fountain and failed infrastructure project.

This crumbling Art Deco movie palace in Mexico City has been abandoned for two decades.

This giant expressionist head crowns a museum devoted to a beloved Mexican leader.

There is one corporation registered for every three square feet of space in this inconspicuous office building.