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

An elevator into the Baltic Sea.

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

This German version of Universal Studios holds a vault of treasures from the NeverEnding Story.

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

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

A stairway to heaven, or to nowhere at all.

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

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The prototype for all Nazi concentration camps.

"The most colorful grottoes of the world.

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

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

A surreal museum of extraordinary industrial objects.

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

A magical place that lets you play in and explore the world of Studio Ghibli.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

An exquisite tunnel of cascading flowers.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

If New Orleans is the birthplace of the "cocktail," why does their own museum of cocktail memorabilia beg to differ?

A little piece of Paris in the sultry south of the U.S.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.