Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

Hundreds of hidden passageways weave through the old quarters of Lyon.

Historic medieval fortified city in southwest France.

This small island, a byproduct of 19th-century canal construction, is now home to a charming Japanese garden.

A medieval house adorned with enigmatic carvings, including one of a man displaying his masculine attributes.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

A massively oversized measuring tape sculpture sits inside a hidden yard.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

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

The celebrated eyesore created by starry-eyed sweethearts.

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

A mud statue stands in the dark tunnels, seeming to hold up the weight of the city above.

This bridge was constructed from the rubble of the infamous Bastille.

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

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

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

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

This modest marker near Notre Dame identifies the very center of Paris.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

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

A New England curiosity cabinet, one hundred years on.