17th-century merchants in Bristol nailed their deals by placing money on these pedestals.

Banksy's image of a naked man dangling from the window of a sex health clinic.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

A bit of retro transportation flair preserved in the world's largest department store.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

This amazingly preserved Doric temple was abandoned before it was ever completed.

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

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.

The celebrated eyesore created by starry-eyed sweethearts.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

The mummified heart of Louis XVII, the lost dauphin of the French Revolution.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

This bridge was constructed from the rubble of the infamous Bastille.