This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Ride the subways of yesteryear.

Risk arrest while partying to fund art.

This innocent-looking townhome is actually a subway exit.

The Argonaute submarine was the French navy's pride and joy in the 1950's.

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

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

Dedicated to the art of hunting, with juxtapositions of contemporary art.

The celebrated eyesore created by starry-eyed sweethearts.

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

A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.

France's national museum of scientific and industrial instruments.