The video game-themed street art first popped up in the French city.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

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

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

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

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

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

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.

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

This Parisian café sticks almost exclusively to an ethos of reuse.

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

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

Architectural monsters are devouring this palace's every door and window.

The final resting place of the poets Shelley and Keats.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

The yawning maw of this pagan visage is said to bite off the hands of liars.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

An alchemist's "magic door" stands in the middle of a Roman park.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

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

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A clear blue swimming hole with hidden caves, still unexplored.

A pair of giant legs paying homage to a poem, a king, and it would seem, socks.