Death rituals and sacrifice inside a Peruvian megalith.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

An art deco ice cream shop covered in vintage train station tiles.

An abandoned relic of the city's failed experiment with below ground transit.

The longest navigable underground river in the United States is home to countless blind and albino animals.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

Mysterious stone tower featured in many alternative histories of the New World.

Unicorns, elephants, and bears, oh my!

A simple Colonial home with a past haunted by death and madness.

An architectural statement of artistic intent smack in the middle of Providence, Rhode Island's Colonial uniformity.

Final resting place of one of the classic authors of horror literature.

Last residence of H.P. Lovecraft featured in his story "The Haunter of the Dark."

The world's largest public collection of PEZ memorabilia.

Walk through the history of American pop culture.

A colorful piece of contemporary art cheerfully clashes with Lyon's historical architecture.

Antique cinematography artifacts fill this museum dedicated to the inventors of the moving picture.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

Lyon's miniature version of the Eiffel Tower was built as a statement in support of French secularism.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

Monsters and miniatures are held in equal esteem at this wondrous museum.

Hundreds of hidden passageways weave through the old quarters of Lyon.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

An existential riddle in the world's largest ancient castle.