In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

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

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

The oldest continuously operating mint in the world that has been making coins since the 9th-century.

Shop at the 200-year-old store where Julia Child stocked up on copper cookware.

Executions were once held near this beautiful 18th-century fountain.

Order a boozy baba au rhum at the oldest patisserie in Paris.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

The oldest house in Chicago certainly doesn't look the part and there are some who say it doesn't deserve its title either.

A Yiddish theater turned movie house turned rock and roll landmark turned gay disco turned bank.

NYC's legendary underground network for bovine transportation.

New York City's only wildlife rehabilitation center treats more than 3,000 feathered and furry patients each year.

Hear the tales of New York's most notorious criminals.

Slyly buy a shake in the Parker Meridien lobby.

Hidden inside one of the world's most well-visited zoos is a secret plaque promising eternal life.

A self-made museum in Queens, New York continues to display the work of a sculptor known for paving his own way.

A Ukrainian church canteen doles out hearty fare in an East Village basement.

This speakeasy continues the Prohibition-era legacy of Harlem's jazzy Swing Street.

For over 80 years, Mayan ruins stood proudly in a most unlikely location.

A no-frills cinephile haven known for showing offbeat, underseen films.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

A church filled with the bones of hundreds of virgins martyrs—or so they say.