Read between the lines of the subway map to find the hidden abandoned Civil War fort.

The highest point on the island known for buildings that touch the sky.

This abandoned caretaker's apartment is one of 13 left in the New York Public Library system.

Built in the 1920s, this co-op in the Bronx feels more like an Italian villa than a typical New York apartment building.

An isolated beacon with a history of grisly murder and a view of some of literature's greatest inspirations.

Surrounded by low rise buildings and partially converted into an auto body shop, this marble archway is the only vestige of a forgotten Manhattan estate.

The loneliest island in New York.

The famous author's cottage hideaway.