A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Go inside to really appreciate this 500-year-old technological masterpiece.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

The massive machine creates cracking displays of indoor lightning.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

Affectionately known as "Lord Bot," this historic statue has a cult social media following and rightly claims to be “the most metal inhabitant of the Wren Yard.”

A towering monument in Spain has proven to be more labor-intensive than initially planned.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

Ancient human remains unearthed around the iconic monument.

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

It was once the base for a series of domestic terror attacks.

The site of the climactic scene from the classic horror film is now a historic landmark.

This is not your typical jungle gym.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.