While this monument tile is shrouded in mystery it also marks the end of the longest ever human chain.

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

A bit of the Berlin Wall was gifted to the Icelandic capital to commemorate the 25th anniversary of German reunification.

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

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 monument to the man who almost killed Hitler.

A fascinating insight into daily life in the Eastern Bloc.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Road signs in Namibia mark the location of one of the five major circles of latitude.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

Monasteries on rock pillars, once accessible only by frayed ropes.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

A bronze sculpture of Lenin’s likeness outside Havana surrounded by 12 human figures in solidarity with the Bolshevik Revolution.

This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A museum in the former home of Marxist revolutionary Leon Trotsky.

Twelve natural mummies are displayed in the crypt of this former monastery school.

Frida Kahlo's childhood home, now a museum of her life and works.