This painted Lego bridge is the product of over a century of locomotive history.

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

The "Prussian Versailles" that is as glorious today as when it was built.

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

One of downtown Berlin's last reminders of its Communist past.

It's always summer at the beach inside this former airship hangar.

A quaint Russian village in the middle of a German metropolis.

A German apartment building hosting as many trees as human occupants.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

Slaughterhouse Five opens its dank doors to fans of Kurt Vonnegut.

What was once thought to be a wellspring of unicorn bones is actually just a prehistoric burial site.

These 18th century gardens tell a rocky story of the son of Odysseus.

This conical hill was built as a testing ground for an engineer known as the Glider King.

An elevator into the Baltic Sea.

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

Blitzkrieg bop your way through Berlin's Ramones Museum.

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

Living trees form the structure of an open-air palace.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

A stairway to heaven, or to nowhere at all.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

"The most colorful grottoes of the world.

This "floating railway" is one of the world's oldest monorail systems.

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