An underground city of salt.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

When the rain falls, this drain system turns into a musical instrument.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

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

What looks like a suicide in progress is actually a statue of Sigmund Freud.

Macabre astrological automaton clock dating to the late 1400s.

This fairytale inspired, warped building houses restaurants, shops, and a radio station.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

Enter the cabin of a life-sized Hindenburg replica.

This stunning concert hall has become a symbol of Iceland's national recovery.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Museum dedicated to the terror regimes of Hungary.

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

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

France's most famous cemetery, with some of its most curious tombs.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

Naturally formed rock city in Poland.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

A collection of old neon signs from all over Poland line a secluded courtyard.

Relive a Polish uprising via an enormous, century-old cyclorama.