Only through the lens of a microscope can visitors see the true treasures inside this museum.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

A unique collection of Western and Japanese-style graves.

Take a stroll through the history of prams, carriages, and other ways we move babies around.

No one's quite sure where this quirky university tradition originated.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Try not to get slimed in Tribeca.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

These rows of World War II-era bunkers were the scene of some of the infamous Mothman sightings.

Roadside display for a popular fruit and vegetable stand.

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

The first piece of public art dedicated to LGBT rights.

A curious collection dedicated to human and animal anatomy and pathology.

On the Hudson resides one of the largest clocks in the world.

This unassuming retro burger joint was billed as “diner of the future” at the 1939 World's Fair.

A little sculpture with a large wardrobe.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

Climb inside an iron crystal magnified 165 billion times its normal size.

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

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

The bronze uniforms commemorate the vital role of women during World War II.