A patriotic medieval knight in driven-nail armor raised money for widows and orphans of WWI.

Collection dedicated to funeral rites, equipment, and mourning rituals of the Viennese.

A collection of collections ranging from dentistry to minerals.

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

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

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

Museum devoted to the artificial language of Esperanto.

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

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

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.

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

This former insane asylum now holds a pathological anatomy museum.

Macabre museum devoted to historical Viennese murders.

Handsomely crafted representations of our round planet.

This evocative New Jersey statue memoralizes the Polish victims of a Soviet massacre.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

The only building in Louisville (hopefully) that contains two ancient holy skeletons.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

Huge abstract sculptures of the Puerto Rican Flag.

A science teacher's dream.