Remains of the old fortification along the Western border of the USSR, now an elaborate defense museum.

The NASA scientists behind Apollo 11 started out developing Nazi weapons at this abandoned German rocket factory.

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

The ruins on a deserted tropical island in the Philippines bear the scars of WWII.

There are two dozen tanks just sitting in an open field in Lower Saxony.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

World's first "penitentiary," meant to be humane, drove men insane.

Thousands of jack o'lanterns light up Halloween at this historic West Virginia home.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

Inside, ancient treasures. Outside, modern contradictions.

An abandoned relic of the city's failed experiment with below ground transit.

This collection of Japanese luck idols beckons visitors with over 2,000 waving paws.

This magnificent Cincinnati graveyard is also a popular public park.