This research center for rare prosimians is studying how they sleep to help prolong human life.

This futuristic folk sculpture park sits along a peaceful stretch of rural North Carolina roadway.

Granite outcropping that the state's tourism bureau doesn't promote because of its delicate ecosystem.

A French artist's vague warning hangs over Belleville.

BDSM, 1930s Style.

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

The first green space constructed on an elevated viaduct.

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

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

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

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A surrealist timepiece by the artist of melting clocks.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

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

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

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.

Notorious artist squat renovated into legal studios.

France's most famous cemetery, with some of its most curious tombs.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

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

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

An alternate history park where the Union Army loses the war... to dinosaurs.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.