Terrifying derelict military hospital once housed a recuperating Hitler.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

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 tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

Ruins of a German Castle on top of a towering stone pillar.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

The fairy tale castle of the "fairy-tale king."

The original film set of Luke Skywalker's Tatooine home from the 'Star Wars' trilogy.

Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

Abandoned outpost once home to a murderous tyrant.

A 13th century fortified house built to defend the Duchy of Burgundy.

Now a memorial, this factory was once used as a concentration camp for artists by the Vichy government.

Abandoned blockhouses from Nazi Germany's Atlantic Wall erode into the sea on a French beach.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

This castle-fortress is a living example of the transition from medieval defenses to modern fortifications.

Site of one of World War I's most horrific scenes.

A Christian retreat founded to welcome refugees fleeing from the Nazis during World War II.

The haunting concrete remains of a Nazi pebble crusher can still be found in this small French commune.

Resting on a hill overlooking the coast, these medieval ruins look completely deserted save for their restored chapel.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

A massive, secret marina for the Nazis' most formidable weapon in the Atlantic.

This ancient theater was once the home of fierce gladiatorial battles.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.