A quartet of tiled art pieces adorn the floors of this prestigious art museum.

This striking statue brings a scene from the African savannah into central London.

A statue of the original Pearly King is hidden in a church's crypt.

An eccentric Victorian aristocrat's enormous collection of medieval armor and weapons from around the world.

A mysterious shape catches the eye in this 16th-century painting.

This macabre painting of a Shakespearean scene looks like something out of a nightmare.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

Eighty million natural history specimens call this gargantuan museum home.

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

One of the oldest and most significant collections of Ancient Egyptian archeology outside of Egypt.

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

Pilgrimage site for star-crossed lovers.

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

Saint Borromeo often prayed in this austere crypt during the 16th century.

A small sculpture that pays homage to the famous bronze ear of Ca de l'Oreggia—or does it?

Third time's a charm, or in this case, two testicles are.

See what remains of a once grand ancient Roman circus.

The enigmatic sculpture hides above an escalator in a Milan metro station.

The mark of the Devil's horns on a marble column in Milan.

This poignant art installation raises awareness of violence against women.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

The secret medieval communication system will whisk your words above the noise of the crowd.