Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Step inside an ancient beehive tomb built for a mysterious cult hero.

This legendary city has been a tourist attraction for centuries.

A sharp sculpture made of thousands of pieces of jagged glass.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Legend says this sacred tree was a gift from goddess Athena.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

Mexico's astounding mummy museum with "the world's smallest mummy."

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

The ruins of an important pilgrimage destination for worshippers of a Maya fertility goddess.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

Famously misunderstood wonder of the ancient world

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

A grumpy old water goblin guarding an old mill on the Devil’s Stream in Prague.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

This automated sculpture of two men peeing will spell out text messages with their micturition.

The medieval "Bearded Man" relief still serves as a clever flood warning marker.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

A surreal statue honoring Prague's favorite literary son.