Little Red Lighthouse under the George Washington Bridge.

Commemorating the spot where the famous scientist fed his pigeons.

Rummage through this sunken ship, but leave your scuba gear at home.

A whimsical, but often overlooked clock in Park Avenue.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

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

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.

A bit of retro transportation flair preserved in the world's largest department store.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

During the holidays, a vintage subway train whisks New Yorkers back in time.

Visit the monolithic tomb of America's most famous general.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

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

Cryptic messages embedded in the New York City sidewalk.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

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

Wine bottle sculpture with a ship's stateroom inside.

The "Seinfeld" diner.

A hidden "place of interment for gentlemen."

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

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