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

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

A flamboyant five-story building in Bulgaria resembles a crawling snail.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

A spiral staircase twists to the top of this unusual Czech lookout tower.

World's oldest and largest space launch facility, once a secret missile testing site.

The haunting ruins of a military fortress turned astronomical observatory sit on a Sarajevo mountaintop.

The most peaceful "country" in the Middle East.

The Liverpool street made famous by the Beatles is real.

Buried beneath the New Mexico sands are believed to be millions of copies of Atari's E.T. video game.

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

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

Home of the International Space Hall of Fame.

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

"I did this all while you were watching TV."

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

A multi-storied adobe complex has been inhabited for more than a thousand years.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

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

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

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

A museum dedicated to the alleged Roswell Incident.