One of Jeff Koons’s largest sculptures and his first commemorative work.

This emotive sculpture was originally created for the 1878 World's Fair.

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

The Sun King's military models, saved from the Louvre.

A daily pyrotechnic celebration marks a beloved tradition during Valencia's festival season.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

The remains of a convent turned military barrack in the heart of Madrid.

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

According to folklore, Vermont's slanted windows were installed to keep witches from flying into the house.

An early 20th-century bullring converted into a modern shopping center.

Local legend has it that an old, decaying staircase outside this cemetery is haunted by dozens of ghosts.

The oldest working bell set in North America, the bells at Old North Church sat silent for their first four years in Massachusetts.

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

A pair of black granite tails dive into a sea of grass in landlocked Vermont.

Elaborate tile work in this railway station tells the story of Portugal.