These unique markers designate the route American forces took during the Liberation of France.

A tilted half-timbered house from 1672 is built into a salvaged segment of a medieval wall.

A beautiful and classically designed villa, with an hourly infestation of monsters.

This emotive sculpture was originally created for the 1878 World's Fair.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

One of the last umbrella repair shops in Paris upholds the nostalgic art of umbrella making.

The first green space constructed on an elevated viaduct.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

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

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A haunting collection of the vanished and disappearing natural world.

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

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

The oldest stone house in Paris was built by its most famous alchemist.

Haunting monument to the German Jewish philosopher who died while fleeing fascism.

Hear the quietest sound from across the dome.

Giant, friendly pelicans in Central London, the most unlikely of places.

Repository for more than 22 million pickled specimens.

The monster at the center of the Darwin Center Spirit Collection.

A tribute to an explorer and naturalist often overlooked by history.

Breathtaking and huge 430 year old maps of Italy.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.