Because sometimes you need to make a batch of frites even when the stores are all closed.

The granite head appears to be deep in thought and half buried in the ground.

Nestled in the heart of Milan is a real wunderkammer of morbid curiosities.

An all-American grocery store in Paris sells U.S. "cuisine" like Pop-Tarts and Heinz ketchup to homesick ex-pats.

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

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

This innocuous-seeming building is actually the remnant of a major wartime brothel.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

This museum houses an imposing skeleton army comprised of creatures great and small.

Indents in the pavement are all that remain from a grisly death machine in Paris.

Enter the cabin of a life-sized Hindenburg replica.

This enormous World War II relic is one of the largest wooden structures in the world.

This translucent sculpture represents a quintessential component of New York City's skyline.

A simple plaque remembers an act of WWI terrorism that obliterated an island and forever scarred the Statue of Liberty.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

A pair of connected skyscrapers form this symbolic gateway.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

Because sometimes the most efficient route from A to B isn't a straight line.

Send a postcard while vacationing with Satan.

To literally keep their waste out of their own backyards, the citizens of this English city built an impressive sewer system that is still in use today.

Tirelessly maintained by a Wisconsin man named JFK.

This unique bridge physically lifts a piece of the road into the air to let boats pass by.

There's something big lurking beneath the surface of this tiny Oregon park.