Over the centuries, this island paradise has done it all, from providing monks with ecclesiastical respite to sheltering an exiled Leon Trotsky.

A patchwork of ruins from various civilizations in one of the world's oldest continually inhabited cities.

A monumental underground karstic wonderland is also the water source for over a million citizens of Beirut.

After this one-of-a-kind palace was built the architect's hands are said to have been cut off to keep it that way.

Reminders of the Battle of Berlin still scar the railway.

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

Gargoyle head that brings good luck.

An ancient knight and a symbol of the city's freedom.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

When German-Iraqi relations broke down, this embassy was vacated post haste.

A 12th-century fortress containing some of Berlin's oldest buildings.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

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

Several of these strange cone-shaped bunkers can still be seen around the former Nazi headquarters.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

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

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

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

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

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

Terrifying derelict military hospital once housed a recuperating Hitler.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.