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

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

A little sculpture with a large wardrobe.

Cozy basement bar sports an inventory of over 2,000 beers.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.

Retirement home for giant obsolete machines.

Floating swimming pool within a moored vessel.

Metro station with a claim to rock n' roll fame.

Berlin's old airport.

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

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

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

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

A brush maker used his factory to protect blind Jews from the Gestapo.

Cold war icon and onetime "hole" in the iron curtain.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".