A museum marks and documents the site of the Titanic's launch.

This bridge was constructed from the rubble of the infamous Bastille.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The final resting place of President Chester A. Arthur and hundreds of others from Revolutionary War soldiers to poets, politicians, and painters.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

The famed amusement district marks the beginning of summer with a wild procession of nautical creatures.

Little Red Lighthouse under the George Washington Bridge.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

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

An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

Mysterious 500-year-old tapestries depict a unicorn hunt.

Sniff the Titan Arum's rotting flesh.

Ride the subways of yesteryear.

A dilapidated dock tells the story of Titanic's missed arrival.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

Elevated freight railway turned wildly successful urban park.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

An early-19th-century hotel with a past that is steeped in the Civil War.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

To find the "unicorns of the deep" you've got to go downstairs.