An industrial relic is now one of Europe's most staggering art spaces.

This former steel and coal plant is now a neon-lit industrial fantasia.

No need to strap in for a "ride" on this walkable roller coaster.

A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

An intricate and amazing house built by architect Karl Junker.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

Ruins of a German Castle on top of a towering stone pillar.

Retirement home for giant obsolete machines.

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

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

A collection of abandoned typographic signs from Berlin and beyond.

Art and a pun, all in one.

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.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

The most visited, and possibly most controversial, museum in Germany.

Started as a kitchen garden, now the second largest botanical garden in the world.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

An eerie, derelict amusement park in Berlin.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

The highest point in Belgium is a staircase to nowhere.