A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

Pilgrimage site for star-crossed lovers.

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

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Thirteen sculptures in central Moscow graphically depicting vices of the modern world.

A sculpture park of the tossed aside relics of the USSR, from Stalin to a massive Soviet emblem.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

It is still illegal to "quarrel" at this unlikely urban oasis built on top of an electrical substation.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

The broken skateboards that became a poignant memorial to a murdered skater.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

Ship-sized kinetic sculptural fantasy.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

The Pope’s secret escape route.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

Beautiful views and Roman-style statues on the Italian coast.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

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

Cave shrine on Monte Pellegrino.

Haunting graffiti left by prisoners of the Spanish Inquisition.