The skeletal frame of a decommissioned gas-pumping station offers breathtaking views of greater Berlin.

This spooky statue sits outside a famous Prague theater.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

Where once there was a train station bathroom, there is now this German burger joint.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This obscene artwork on the side of a newspaper office pokes fun at a rival paper's former editor-in-chief.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

Named after a militant urban guerilla, this famous former squat is a graffiti-covered stronghold of leftist culture.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A 1,000-year-old church holds the bones of the Christian martyrs who died hiding inside it.

Skulls and skeletons are omnipresent in this church dedicated to souls trapped in purgatory.

The sunlight passing through the opening of this huge cave system creates a magical effect.

Macabre symbols of death and mummies on display set the tone of this Italian purgatory church.

A dead saint, a deadly poison, and a mysterious holy ooze.

This unique building in the main square stands out among the city's typically Baroque architecture.

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.

Of course Salvador Dalí lived in a castle...

A modernist church in an ancient village.

This embalmed man is one of the best preserved mummies from the Canary Islands.

The final resting place of the great navigator, or maybe his brother.

A hidden three-foot-wide house separates these two regal churches.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.