Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

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

Abandoned railway line circling the city of Paris.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

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

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

The floorboard scrawling of a tragic madman is on public display outside a Paris hospital, much to the dismay of its opponents.

This Parisian café is dedicated to great tea and the art of knitting.

The personal library of the founder of modern neurology is open to visitors.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

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

The historic Masonic Lodge in which the first-ever female Mason was initiated.

Pitié-Salpêtrière was the dumping grounds for women who received the dreaded diagnosis of "hysterical."

This Parisian fountain is a little bit fantasy and a little bit nightclub.

Two awe-inspiring globes from the reign of the Sun King hang from the ceiling of France's national library.

This lesser-known Frank Gehry building houses a treasure trove of cinema history.

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

The first green space constructed on an elevated viaduct.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the 20th century.

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

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

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

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

Paris' fabled purveyor of exotic taxidermy and natural history curios.