On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

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

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

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

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

The topiary maze at the Habsburg hunting lodge.

Ornate limestone building now filled with geologic specimens, and more.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Elvis's own personal tropical hideaway.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

A display of magnificent stained glass windows is the first exhibit of its kind.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The "lovely red Vega" of the legendary record-settling pilot.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

A mocking tribute to the past and modern leadership of Prague.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

The final resting place for the remains of 143 Habsburg royalty.

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

The house that took a plunge into the facade of a museum.

A silly medieval mural preserved on the side of a Viennese house.

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

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