Tiny memorials honor individual victims of the Holocaust.

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

One of downtown Berlin's last reminders of its Communist past.

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

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.

A fascinating insight into daily life in the Eastern Bloc.

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.

An eerie, derelict amusement park in Berlin.

A monument to the "father of modern warfare" Gustav II Adolf.

One of the most iconic neon ads of former East Germany.

A small but hugely whimsical theater where marionettes play out the "The Battle of Stalingrad."

At this rare mosque in Tbilisi, Sunni and Shia Muslims pray side by side.

The secret room where early Bolsheviks cranked out propaganda fliers on a smuggled printing press.

Luxury hotel turned into a refugee camp, then turned back into a luxury hotel.

A gleaming white and undulating tower marks the border between Georgia and Turkey.

Tower with a double-helix spiral, adorned with letters of the Georgian alphabet.

A literally moving statue of stacked metal giants just continually trying (and failing) to find love.

Despite being tiny and rural this Georgian airport looks like a sci-fi boondoggle.

Fortified homes of highland warriors that are still in use today.

This Armenian monastery was carved out of cliffs and named after the spear used to stab Jesus.