An ancient Egyptian temple in the middle of Madrid, Spain.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

This sacred fig tree with a link to the Buddha is one of the oldest human-planted trees in the world.

This elaborate temple was built around one of the Buddha's teeth.

This mesmerizing architectural wonder will take your breath away with its unusual color patterns.

Huge herds of Asian elephants can be seen walking, bathing, and just chilling at this Sri Lankan park.

An ancient stone fortress considered by many to be the eighth wonder of the world.

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

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

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

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

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

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

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

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

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A fascinating insight into daily life in the Eastern Bloc.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

The most visited, and possibly most controversial, museum in Germany.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

France's most famous cemetery, with some of its most curious tombs.