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

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

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

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

A museum of carnival attractions where you are invited to ride the rides.

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

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

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

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

Notorious artist squat renovated into legal studios.

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

An homage to everyone's favorite prehistoric cartoon family.

The stone-covered graves lie within the ruins of an Old West ghost town.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

A partial tunnel blasted into a steep ridge is all that remains of a failed railway across Arizona.

A mistaken marker makes an erroneous claim along the historic Old Divide Road.

This collection of neon icons is preserving Arizona's history, one sign at a time.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

A Tucson museum and performance space full of found-object movable sculptures.

A Wild West jailhouse that slid down the mountainside.

This sanguine boulevard was named after a deadly cowboy bar fight.

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

A mysterious spirit totem at the edge of Navajo lands.