The first piece of public art dedicated to LGBT rights.

The home of the first American-born saint is one of the only curved buildings in New York.

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

The most confusing clock in New York.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

Commemorating the spot where the famous scientist fed his pigeons.

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

Mysterious 500-year-old tapestries depict a unicorn hunt.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

The competition: breathe deeply as long as you can.

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

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

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

Avoid gangster interaction while window-shopping.

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

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

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

Cryptic messages embedded in the New York City sidewalk.

Wine bottle sculpture with a ship's stateroom inside.

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

A popular European tradition makes its way to the states on one of America's most famous bridges.

The "Seinfeld" diner.

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

Elevated freight railway turned wildly successful urban park.