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

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

Hidden behind a gate in Greenwich Village is a little farmhouse that once served as the writing studio of a bestselling author.

Final resting place of the immigrant who brought artificial seltzer water to America.

A burial ground of rusting metal grave markers.

The former home of the reclusive "Weird Wendels" who dominated New York real estate a century before Donald Trump.

Brooklyn's Barkaloo Cemetery is the resting place of a scant two bodies.

Once a month, an Indonesian feast appears inside an Elmhurst church hall.

Ever wanted the laymen's version of your credit card fine print?

The oldest living organism in New York City. Maybe.

A young woman's senseless murder led to the controversial psychological theory of the "bystander effect."

Head past the aisles of tropical fruit and imported candy at this bodega to discover a hidden, weekends-only taco stand.

The Underground Railroad passed right through this historic Brooklyn Heights church.

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

Revolutionary War casualties fill the only 17th century structure remaining in Manhattan.

Con Edison’s exotic and heat-loving pests.

During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.

Final resting place for the Triangle Shirtwaist fire’s unidentified victims.

The gilded vestiges of a sterling department store can still be found in a Brooklyn shopping center.

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.

A mysterious, abandoned building rotting on the Brooklyn waterfront.

This slender three-story building has also had several famous residents.

A strangely angled West Village home is the only monument to an explosion that took the lives of three American revolutionaries.

This Manhattan museum houses one of the largest collections of Spanish art and manuscripts outside of Spain.