Twisted buildings adorn the banks of the Rhine river.

The home of the morbid art of corpse plastination is open for visitors to view the fascinating, but stomach-churning process.

A stairway to heaven, or to nowhere at all.

This little museum is making sure that the art and history of the graffiti sticker is not scraped from history.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

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

Blitzkrieg bop your way through Berlin's Ramones Museum.

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

Silent memorial, using bone conduction to take people back to the Dresden Bombing of 1945.

This historic stone bridge has an entire neighborhood clinging to its sides.

"The most colorful grottoes of the world.

The prototype for all Nazi concentration camps.

An intricate and amazing house built by architect Karl Junker.

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

A collection of abandoned typographic signs from Berlin and beyond.

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

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

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

The fairy tale castle of the "fairy-tale king."

This town named for the ancient God of War is home to fewer than a thousand people, but it's the birthplace of the Greek Revolution.

This secret coastal village is studded with pastel-colored houses all piled on top of one another.

Thousands of rusting train cars have been slowly falling apart on the edge of Greece's second largest city.

This remarkable cave was discovered after a shepherd watched bees enter and exit through a small fissure.

Swarms of dainty flying insects swarm into the Petaloudes Valley to get busy.