Historic medieval fortified city in southwest France.

This off-limits room in the National Library of France is home to a system of pneumatic tubes, once used to bring books to readers.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

A surrealist timepiece by the artist of melting clocks.

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

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

This massive library holds what was once the largest book collection in the world.

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

This French anatomy museum greets guests with a skinless man, mid-shovel.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.