Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

An unexpected desert oasis in South America.

The mysterious "Candelabra of the Andes" could represent anything from a god's trident to a hallucinogenic plant.

The remains of what was the most important religious complex in coastal Peru for over a millennium.

Lima’s Museum of Anthropology is lined with thousands of elongated human craniums.

A monument to the conquistador became increasingly controversial in the very city that he founded.

Thousands of volcanic rocks carved 1,000 years ago.

There are no crying babies in this neck of the woods.

A Gothic-inspired fish market is Gothenburg's best place to find loaves and fishes.

18th century opera in its original splendor.

Stockholm's deepest subway station is also a stunning ecological wonder.

A man has revenged his true love's betrayal through tears and stone genitalia.

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.

Sweden's "good old days" painstakingly re-created in a model village.

It houses the remains of a 17th-century version of the Titanic.