Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

The "Seinfeld" diner.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

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.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Elevated freight railway turned wildly successful urban park.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

Red frames showcase remnants of one of New York's original subway stations.

An annual extravaganza of Broadway theater memorabilia.

The most confusing clock in New York.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

The site of the deadly Triangle Shirtwaist Factory Fire.

Commemorating the spot where the famous scientist fed his pigeons.

The oldest living tree in Manhattan comes shrouded in sinister legend.

An artist's cute bronze subway sculptures belie his violent artistic past.

Cryptic messages embedded in the New York City sidewalk.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

Unrepaired walls from a 1920 anarchist bomb attack.

100 massive sculptures in the Hudson River Valley.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

"A hideous albatross in the Hudson River Valley."

The oldest continuously inhabited street in America.