The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

This former Nazi castle was built as a school to train what would have been the future of the Third Reich.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

The soulless eyes of 82 bronze children stare on forever in remembrance of a horrifying World War II massacre.

One of the largest amphitheaters in Europe is a former Nazi gathering place that still stands today.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

The prototype for all Nazi concentration camps.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

Khmer Rouge's high security prison.

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

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

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

Super-heavy Nazi architectural experiment.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

This attraction was abandoned after the Chernobyl disaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

Sculpture that doubles as a time capsule so that life can survive radiation outside Chernobyl.

This derelict superstructure was a very important warning system for the Soviet military.