The prototype for all Nazi concentration camps.

These 18th century gardens tell a rocky story of the son of Odysseus.

This conical hill was built as a testing ground for an engineer known as the Glider King.

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

Floating swimming pool within a moored vessel.

Terrifying derelict military hospital once housed a recuperating Hitler.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

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

A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

A unique Holocaust memorial tells the personal stories of the Jewish residents exiled from greater Berlin.

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

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

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

A collection of abandoned typographic signs from Berlin and beyond.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

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

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

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

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

Remnants of a Victorian garden feature sitting in public woodland.

A kaleidoscopic warehouse-maze of handmade neon signs.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.