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

A monument to the man who almost killed Hitler.

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".

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

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

A fascinating insight into daily life in the Eastern Bloc.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

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.

A surreal museum of extraordinary industrial objects.

The most visited, and possibly most controversial, museum in Germany.

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

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

Local legend says the remains of Father Christmas lie within the medieval grounds.

A long strip of fossil-filled limestone makes up this natural bridge above a rushing stream.

The beloved beast's taxidermy remains sit in the Natural History Museum's cafe.

This educational institution and reference library specialize in the psychic arts and mediumship.

A discarded movie prop that was the original monolith for "2001: A Space Odyssey."

Residents of Berlin take their coffee and cake in one of the city’s most restful spaces: a cemetery.

This unassuming alcove in London’s famous Tower Bridge once served to capture, store, and display dead bodies from the River Thames.

At this exhibit on the world of poison, venomous animals steal the show.

For more than two centuries, the canopy of this venerable tree has been a haven for songbirds and lovers.

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