The world's largest reflecting pool is just two centimeters deep.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

A surrealist timepiece by the artist of melting clocks.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

Notorious artist squat renovated into legal studios.

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

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

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

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

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

A restaurant and observation deck built in a unique broadcasting antenna.

Commonly acknowledged as the only public monument to the Devil himself.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

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

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 museum dedicated to a Cold War era sausage.

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

The celebrated eyesore created by starry-eyed sweethearts.

Where commuters walk through remnants of an ancient Greek necropolis.