This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

The ruins of an abandoned crematorium haunt an eerie deserted German cemetery.

This unique Renaissance castle was turned into a home for Nazi occultism.

These blingy, baubled skeletons lie in glass boxes inside a baroque Bavarian church.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

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

An intricate and amazing house built by architect Karl Junker.

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

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.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A preserved college lock-up that recalls a clubhouse approach to discipline.

An officers prison camp believed to be impregnable by the Germans saw over 30 successful escapes.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

This East German military command bunker was ready for World War III.

A former Nazi lookout tower with a magnificent view of the Rhineland.

The prison where Hitler wrote "Mein Kampf," and 278 Nazis were later executed for war crimes.

The abandoned mine where American troops discovered a treasure trove of art and artifacts hidden by the Nazis.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.