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

Saintly bones pressed into a wax effigy of a Catholic superstar.

A 30-acre garden inspired by the principles of modern physics.

Exotic feline breeding compound and conservation center.

The Sun King's military models, saved from the Louvre.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

A unrivaled and rather horrifying collection of wax dermatological models.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

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

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

This Paris art space celebrates the creativity and ingenuity that springs from abject poverty, especially in Africa.

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

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

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

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

Egyptian Revival movie palace abandoned for decades and restored in 2013.

Got apples?

Paris' linguistic guide to the international language of, yes, love.

Notorious artist squat renovated into legal studios.

A mechanized clock where a man fights off a dragon, crab, and rooster.

This innocuous-seeming building is actually the remnant of a major wartime brothel.

France's national museum of scientific and industrial instruments.

Despite being considered a thoroughly American sport, basketball's oldest surviving playing field is found in the basement of a Paris YMCA.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.