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

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

Raised illegally, Reggie now lives at the Los Angeles Zoo after authorities spent years tracking him down.

The largest collection of two headed animals in the world.

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

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

World's largest collection of serial killer artwork and other macabre exhibits.

Where the leftovers of love affairs can live on forever.

A look into the Church of Scientology's deeply unfavorable view of psychiatry.

Medical and zoological curiosities for sale.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Historic funicular railway, believed to be the shortest railroad in the world.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

Go surfing on this urban wave, "hacked" by local surfers.

Started as a kitchen garden, now the second largest botanical garden in the world.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

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

Where once there was a train station bathroom, there is now this German burger joint.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.