A restaurant modeled after feudal Japan, where the waitstaff are trained as ninjas.

The recovered bones of martyrs slaughtered during The Terror are on display in this church crypt.

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.

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

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

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.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

This Parisian café sticks almost exclusively to an ethos of reuse.

This modest marker near Notre Dame identifies the very center of Paris.

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

The collection of intricate sculptures includes one carved from a mammoth's tusk

This tiny garden was built specifically to provide a place of peace and serenity away from the busy city streets.

This Japanese-inspired park showcases the city's peculiar trends for naming features after foreign rulers.

Come face to face with the ferocious visage of the serpent-headed mother goddess of the Aztecs.