This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

Double spiral staircases are not unheard of, but they are very rare.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

Something's watching you.

A fearsome dragon clings to a corner of Munich's city hall.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Where commuters walk through remnants of an ancient Greek necropolis.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The house that took a plunge into the facade of a museum.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

The Neapolitan Cult of the Dead still cares for the skulls at this mini-Fontanelle.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This fountain of a little boy that spits on passersby at erratic intervals is a town icon.

Erotic art covers the walls of the largest ancient pleasure palace.

Ancient snack bar of the Roman Empire re-opened.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Pompeii's less famous neighbor is still revealing her secrets.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.