Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

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

This old-fashioned roadhouse's quirky neon sign is as famous as its enormous dumplings.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

This impressive mansion in Vinegar Hill has some mysterious details in its architecture.

Site of the first pathological and bacteriological research facility in the United States.

A memorial to the first person killed by a motor vehicle in the Western Hemisphere.

On the top floor of an upscale department store stands a lavish restaurant housed in a replica of a luxury French dining car.

A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

This Central New York ghost town was once a prosperous railroad community.

Established in 1925, Kiddie Park claims to be the oldest amusement park in the U.S. - a cozy little time warp nestled in a shady corner of the modern world.

The most unloved grain elevator in Brooklyn was a “Magnificent Mistake.”

The ballpark in "Pigtown" where the Brooklyn Dodgers made their name was replaced with a huge apartment complex.

New York's oldest concrete structure is being preserved thanks to the gentrification of Whole Foods.

One of the deadliest American air disasters is nearly forgotten in Brooklyn.

While it now takes more than a dime to open an account this historic Brooklyn bank still displays the opulence of the gilded age in which it was built.

A modern zoetrope on the New York City subway.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

Experience what life was like in Ireland during the Viking and medieval ages.

The rest of him lived another 61 years and was buried elsewhere.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

Fake rail crossings mark the site of an influential doctor's demise.