From Nazi chemicals to the CIA, this architectural marvel has played a fascinating role in German history.

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

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

The first museum in the world devoted to sexual gadgetry.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

A controversial artwork draws attention to the dark history of Prague's "Suicide Bridge."

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

Walk through Czech history in Prague's largest graveyard.

Austria's very first and only nuclear power station was completed but never used.

The resting place for anonymous victims of the Danube's dark waters.

Collection dedicated to funeral rites, equipment, and mourning rituals of the Viennese.

This museum promotes informed contraception by documenting its often secret past.

One of the best collections of wax anatomical models in the world.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Handsomely crafted representations of our round planet.

The final resting place for the remains of 143 Habsburg royalty.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Op-art architecture designed for happiness.

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