The silly symbol for an underground protest group is now scattered around the city.

A collection of old neon signs from all over Poland line a secluded courtyard.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

This Italian museum is a one-of-a-kind celebration of printing and type.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

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

Ancient snack bar of the Roman Empire re-opened.

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

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

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

Fountain where visitors can earn a license to be mad.

Medieval streets buried beneath a papal fortress now form an underground city you can walk through.

This lesser-known leaning tower is all that remains of the medieval castle of Vernazzano.

The eerie ruins of this feudal fortress witnessed the execution of 60 conspirators in 1387.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

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

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

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

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.

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

The oldest operating pharmacy in the world features 800-year-old recipes.

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

The origins of a large, medieval castle are shrouded in mystery, but now it's a delightful garden.