Monument to a brutal, ineffectual US bombing campaign and a sobering reminder of the human cost of the Vietnam War.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.

The first piece of public art dedicated to LGBT rights.

A replica of a 7th-century church hides in plain sight in the middle of the concrete jungle.

This nearly invisible wire transforms much of the city into one big, symbolic home on the holy day.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

This castle-like building in Manhattan helped destigmatize cancer in the 19th century.

A simple midtown bar was once the home of a secretive and exclusive club staffed by "bunnies" under Hefner's strict rules.

There must be a pun in this haystack somewhere...

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

The most confusing clock in New York.

The notorious headquarters of a corrupt political machine.

A Manhattan office building is home to the world's largest chess board.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

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.

Avoid gangster interaction while window-shopping.

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

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

Lie in a hammock where George Washington stood.

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.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

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

Once a black market electronics marketplace, now an otaku shopper's paradise.