France's national museum of scientific and industrial instruments.

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.

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

Notorious artist squat renovated into legal studios.

Abandoned railway line circling the city of Paris.

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

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

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

Two thousand artifacts from around the world collected by one woman who loved to travel.