A sinkhole known simply as "The Hole."

Uninhabited islet in the Caribbean is the sanctuary of giant lizards.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

This 600-year-old home seems to defy physics.

The prototype for all Nazi concentration camps.

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

A fearsome dragon clings to a corner of Munich's city hall.

Go surfing on this urban wave, "hacked" by local surfers.

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

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

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

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

This modern arts center is built around a gem of late-Baroque architecture.

A Museum of Psychiatry in a still-operating mental institution.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

This abandoned Belgian fortress is purposefully being left to nature.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

World's largest collection of serial killer artwork and other macabre exhibits.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

Disney's abandoned animal island is now an overgrown ruin that was almost the coolest attraction ever.

A haunted hill that supposedly defied gravity.