Revolutionary War casualties fill the only 17th century structure remaining in Manhattan.

This humble historic facade hides a history of boozing and the gentlemanly sport of rat-fighting.

A once grand hotel is being retaken by the wilderness it once capitalized on.

If it hadn't been caught in time, a flaw in the design of this Manhattan skyscraper could have led to its collapse.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

For almost a century, this East Village newsstand has served egg creams to beats, hippies, punks, and everything in between.

A mosaic made of materials gathered from this Brooklyn community adorns the walls of this tunnel.

This Italian ski resort rose to fame when Benito Mussolini was held prisoner there and then rescued by the SS.

It’s said this crypt was the setting for the tragic finale of the Shakespeare play.

Where Venice's gondolas go for a tune-up.

Two stone columns flank the grand Venice square, but there were supposed to be three.

The walls and streets of the ancient city are peppered with penises.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

The oldest of Venice's plague quarantine stations, designed to keep the medieval city safe from disease.

Ancient snack bar of the Roman Empire re-opened.

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

The world's most active stratovolcano is almost always erupting.

Pilgrimage site for star-crossed lovers.

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

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

Since 1920, one small company has defined the distinctive chairs of Paris' sidewalk bistros.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.