The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

Fans of vintage Vegas, kitsch, and toy pony-based gambling now flock to a casino called The D.

An exotic wildlife habitat right off The Strip.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

These markers are used to determine the ground stability of the Strip.

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

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

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

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

This symbol of the French Revolution still stands where it was first planted during the 18th-century.

An art-filled botanical garden and former dyeworks hiding in plain sight.

The oldest continuously operating mint in the world that has been making coins since the 9th-century.

Statue of death tucked in the University of Medicine courtyard.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

The narrowest street in Paris.

This demon atop the Notre-Dame de Paris looks utterly bored.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.