It's always summer at the beach inside this former airship hangar.

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

Explore the complex ecology of this multifaceted nature preserve by riverboat.

Terrifying derelict military hospital once housed a recuperating Hitler.

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

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

This historic stone bridge has an entire neighborhood clinging to its sides.

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

This "floating railway" is one of the world's oldest monorail systems.

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

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

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

A Cold War command center is hidden under an idyllic countryside.