A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

This bridge is haunted by the ghost of a distraught mother.

Divinely-inspired village houses 6,000 dolls, plus strange and lovely outsider art.

A sculptor's dream castle turned fantastical ruin.

This museum houses an imposing skeleton army comprised of creatures great and small.

An all-American grocery store in Paris sells U.S. "cuisine" like Pop-Tarts and Heinz ketchup to homesick ex-pats.

The approximate spot where the last Grand Master of the Knights Templar was put to death.

The historic Masonic Lodge in which the first-ever female Mason was initiated.

This innocuous-seeming building is actually the remnant of a major wartime brothel.

This Parisian gem is one of the most incredible ethnographic museums in the world.

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

One of the oldest masonic museums in Paris.

This frog-themed restaurant was frequented by Picasso, Saint-Exupéry, and more.

This ancient structure was built by a mysterious civilization that was largely destroyed by a volcanic eruption.

Frida Kahlo's childhood home, now a museum of her life and works.

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

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

Part bookstore, part café, and part forest.

It's believed this golden brick is part of the legendary lost Aztec treasure.

CDMX's home for the world's culinary delights.

This immense scene of a cosmic battle between a jaguar and serpent illustrates the Aztec concept of the duality of life.

This colossal ancient jaguar sculpture was used as a vessel for the hearts torn from sacrificial victims.

The most complete statue of this Aztec god sits a top a throne carved with images of hallucinogenic plants.

The turquoise-studded skull of a long-dead Aztec man sits within Mexico City’s Museum of Anthropology.