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

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

The 28-foot granite map plots the locations of 40 theaters in New York City.

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

A drawbridge named for a potentially intersex Polish national who fought alongside George Washington during the American Revolution, and an example of "Pulaski Red".

A posh members-only club with a literally dramatic history.

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

The most confusing clock in New York.

The notorious headquarters of a corrupt political machine.

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

Commemorating the spot where the famous scientist fed his pigeons.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

Avoid gangster interaction while window-shopping.

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

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

Lie in a hammock where George Washington stood.

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

This abandoned subway station can still be seen on regular commuter trips.

Slyly buy a shake in the Parker Meridien lobby.

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

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

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