An old department store turned Nazi prison turned artist commune.

Cold war icon and onetime "hole" in the iron curtain.

This classic restaurant features a gorgeous mirror-clad room.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

The most visited, and possibly most controversial, museum in Germany.

A fascinating insight into daily life in the Eastern Bloc.

One of downtown Berlin's last reminders of its Communist past.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

On the highest peak in the Harz Mountains, science and the occult faced off in a failed attempt to turn a goat into a boy.

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

A two-inch thick solid brass rod that extends an astounding one kilometer straight into the earth.

This German museum is devoted to all aspects of grave culture from headstones to coffins.

The resting place for anonymous victims of the Danube's dark waters.

This former insane asylum now holds a pathological anatomy museum.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Baroque celebration of the end of the Great Plague of Vienna.

Legends surround an ancient tree trunk riddled with nails for good luck.

Apartment complexes built into huge repurposed natural gas tanks.

A spherical "micro-nation" in the heart of Vienna.

Op-art architecture designed for happiness.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.