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

Started as a kitchen garden, now the second largest botanical garden in the world.

Come stay at a live-in art installation.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

An eerie, derelict amusement park in Berlin.

Super-heavy Nazi architectural experiment.

Berlin's old airport.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

A sweet museum focused on beets.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

This classic restaurant features a gorgeous mirror-clad room.

The footprint of a frustrated devil in Munich's Cathedral.

A serious museum dedicated to two German comedians.

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

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

A preserved dragon's rib that remembers the legend of the founding of the city of Atessa.

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

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

An otherwise quiet campground becomes a bustling medieval town for two weeks every year.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

The prototype for all Nazi concentration camps.

Bell tower juts out from a village buried under a lake.

Island wonderland for communist autocrats.