A once crucial portion of the Long Island railroad still lays abandoned, waiting to be turned into an urban park.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

Commemorating the spot where the famous scientist fed his pigeons.

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.

A whimsical, but often overlooked clock in Park Avenue.

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

New York City's only preserved family home from the 19th century.

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

A quiet and contemplative oasis in the middle of New York's bustle and riot.

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

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

Cryptic messages embedded in the New York City sidewalk.

Avoid gangster interaction while window-shopping.

A hidden "place of interment for gentlemen."

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

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

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

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

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

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

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

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

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