Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

This magnificent museum claims to house the cranium of a disciple and the skull of a pope.

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

The prototype for all Nazi concentration camps.

Physicist’s epitaph provides final confirmation to a career of turmoil.

Originally envisioned by King Ludwig II to rival Versailles, Herrenchiemsee's "New Palace" remains half-gilded for lack of funds.

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

The silly symbol for an underground protest group is now scattered around the city.

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.

An exquisite Baroque church in Vienna's old town.

The solemn exterior conceals an opulent interior of this 17th century church.

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

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

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

A striking public sculpture representing the period of martial law in Communist Poland.

Tiny communists hammer away on the Olomouc Astronomical Clock.

An ornate plague column – built to celebrate life – claimed the lives of numerous artisans during its construction.

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

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

This former insane asylum now holds a pathological anatomy museum.

One of the best collections of wax anatomical models in the world.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

This doorless 20th-century elevator doesn't stop or slow down.