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

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

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

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

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

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

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

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.

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

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

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

A guitar mounted on a wall in Temple Bar honors the Irish musician.

This statue celebrating everyday life in Dublin has a few unsavory nicknames.

This supermarket offers shoppers a window into the past alongside their groceries.

A collection of housewares from recent Irish history adjoined by a tower from ancient Irish history.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.