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

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

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

Floating swimming pool within a moored vessel.

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

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.

Living trees form the structure of an open-air palace.

A small but immensely extravagant palace built by the "Night King."

Museum about life, death, and cannibalism in the Stone Age.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

Created hundreds of years ago, the magical follies and landscapes at this park were almost lost to time before being restored.

Artists and musicians now rule over this former rail station.

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

A modern English garden of eccentric beasts, follies, and oddities.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

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

Super-heavy Nazi architectural experiment.

A stairway to heaven, or to nowhere at all.

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

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

"The most colorful grottoes of the world.