The highest point in New Jersey is marked by a massive, if simply named, obelisk.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

A World War II-era submarine is stuck in the mud in New Jersey.

100 massive sculptures in the Hudson River Valley.

"A hideous albatross in the Hudson River Valley."

One man's swirling six-acre monument of stone.

Why have you never heard of the second most popular tourist site in New York?

The little-known final resting place of one of America's greatest writers.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

A six-story treehouse offers spectacular views of New York's Finger Lakes region.

Pluto is still considered a planet in Ithaca, New York.

The library of every book lover's dreams.

Perhaps the most scandalous statue of America's first president.

A wall of chewing gum moonlights as collective art.

A museum dedicated to the history and exploration of both popular music and science fiction.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

The iconic Manhattan corner that was once the site of the Beastie Boys' fake clothing store.

The rough and tumble president's childhood home displays the shirt he was once shot in and the speech that saved him.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Staten Island's original central park is the former home of the city water supply as well as thousands of immigrant graves.

A town trapped in time - 1958 to be exact.

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

Millions of numbers carved in glass represent the tattoos forced upon victims.

The world's largest piece of copyrighted artwork.