Drink wine handed out through a window as part of an age-old tradition.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

Artistic tombs, monuments, and a beautiful "Hall of Fame" lurk inside this cemetery.

This poignant art installation raises awareness of violence against women.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

This curious building hides eclectic details like medieval gargoyles alongside naked angels and Art Nouveau mosaics.

A faded reminder of what was once a common sight in London during the Blitz.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

Chelsea's soldiers were given strict orders when crossing this historic bridge.

This underpass became an unlikely piece of cinematic history after its appearance in 'A Clockwork Orange.'

Pop culture has helped to keep this iconic British building from being destroyed.

The childhood home of Earth's alien chameleon is a humble Brixton flat.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

A meditative space out of a fantasy story.

The vaulted ceiling is home to a scurry of “squirrelgoyles.”

An extraordinary collection of 18th century anatomical waxworks.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

This building features dozens of faces along its facade, although one is a bit chilling.

A large statue of Pope Gregory XIII in Bologna was disguised as Saint Petronius to avoid destruction.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.