Places Red Menace Wants to Go

Apartment complexes built into huge repurposed natural gas tanks.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

A spherical "micro-nation" in the heart of Vienna.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

The first museum in the world devoted to sexual gadgetry.

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

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

Folklore says this medieval fortress was plopped atop a portal to hell to trap the demons below.