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

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

The celebrated eyesore created by starry-eyed sweethearts.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

This Paris art space celebrates the creativity and ingenuity that springs from abject poverty, especially in Africa.

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

A series of abstract, silly sculptures represent the works of a great modern classical composer.

The narrowest street in Paris.

Notorious artist squat renovated into legal studios.

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

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

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