In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A huge musical instrument played by the ocean.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

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.

Back in 1952, you could get a mushroom cloud chaser with your atomic cocktail.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

Macabre astrological automaton clock dating to the late 1400s.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

The Swiss artist's bulbous and overgrown shape-shifting sculpture controversially graces the center of Bern.

A constellation of golden cobblestones shows the names of local children born under a full moon.

The World Wide Web was created in this nondescript corridor at CERN.

This simple apartment may have inspired some of the most important theories in the history of science.

Large Hadron Collider and the Birthplace of World Wide Web.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

A fascinating insight into daily life in the Eastern Bloc.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

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

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

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

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A mechanized clock where a man fights off a dragon, crab, and rooster.