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

Berlin's old airport.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

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.

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.

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

A terrific purveyor of natural history objects and curios.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

Light still pours into the ruins of this ancient Islamic observatory.

The Avenue of Mausolea is a series of grand palatial tombs.

A tiny island home to a former English slave fort.

Africa's Venice on stilts.

Dozens of snakes are housed and worshipped within the walls of this Vodun temple.

This striking statue brings a scene from the African savannah into central London.

The bones of two medieval royal lions were discovered at the historic fortress.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.

One of the greatest movie directors of all time lived and worked in this London flat from 1926 to 1939.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.