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

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

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

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

The "Seinfeld" diner.

One of only two commuter aerial tramways in the United States.

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.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

New York's oldest magic store.

Try not to get slimed in Tribeca.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A crumbling hospital from the 1850s on Roosevelt Island.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A terrific purveyor of natural history objects and curios.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

A mailbox that saved a nature reserve.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

This collection of odd proofs of concept is like taking a walk through the imagination of a Victorian engineer.