A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

A beautiful Victorian-era cemetery, complete with a miniature village.

This speakeasy continues the Prohibition-era legacy of Harlem's jazzy Swing Street.

This small, hidden cove is home to abandoned boats.

Once thought to be the fabled Holy Grail, it is now known to be an oil lamp.

A former seaside jewel built for the everyman is now simply a neglected art deco fortress.

Small monoliths of several varieties of stone sit alongside a wooded path in the Bronx.

This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

“Wagon Jobber" turned smokehouse magnate's family-owned business is still going strong 100 years later.

A reminder to choose water over wine since 1888.

Historical figures from New York City's Catholic community reside in Midtown.

Failed state-supported institution meant to rehabilitate students with intellectual disabilities.

A way to take your secrets to someone else's grave.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

This Queens hospital has stood abandoned for almost 20 years after its patients were secretly relocated in the dead of night.

One of the oldest Jewish cemeteries in the city, it is now overgrown with an urban forest.

Final resting place of two dozen New York City harbor ships.

This small and serene place for quiet reflection on Staten Island was built in China based on the gardens of the Ming Dynasty.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

Empty, but not abandoned, this cavernous Brooklyn loading dock was once considered the largest individual building in the world.

Holding the most bodies of any cemetery in the United States.

This otherwise innocuous bodega was once the headquarters of the most feared assassin's guild in American history.