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

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

Berlin's old airport.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

No need to strap in for a "ride" on this walkable roller coaster.

Terrifying derelict military hospital once housed a recuperating Hitler.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

Super-heavy Nazi architectural experiment.

The patron saint of spinsters grasps a container of dried blood.

A stairway to heaven, or to nowhere at all.

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

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

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

"The most colorful grottoes of the world.

An intricate and amazing house built by architect Karl Junker.

A striking 12th-century-style castle built on the edge of a cliff.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

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

A collection of abandoned typographic signs from Berlin and beyond.

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

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

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

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