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

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

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

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

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

The celebrated eyesore created by starry-eyed sweethearts.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Notorious artist squat renovated into legal studios.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The forest that inspired Winnie-the-Pooh's Hundred Acre Wood can be found outside London.

A kaleidoscopic warehouse-maze of handmade neon signs.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

The curios of pharmacist and collector Henry Wellcome.

The final resting place to 300 Victorian-era pets hides inside the city park.

Where's a guy to go after a long, hard day at work?

A recently restored Shoreditch landmark with ties to Jack the Ripper.

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

A celebrated bandstand at the center of what was once the worst slum in London.

A cluttered and astounding collection of antiquities and curiosities.

Eighty million natural history specimens call this gargantuan museum home.

The anatomical-pathological collection of a man who changed surgery.