This morbid scene depicts the Darwinian drama of death on the African savannah.

A pair of 19th-century granite markers symbolically record where the state boundaries of New York, New Jersey, and Pennsylvania intersect.

A historic lighthouse steeped in rumors of ghost and pirate stories.

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

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

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

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

A crumbling hospital from the 1850s on Roosevelt Island.

A collaborative art project that transformed a neighborhood in NYC's Queens.

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

A once grand hotel is being retaken by the wilderness it once capitalized on.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

The headquarters in Salem doubles as an occult art gallery.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

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

This monument is dedicated to Balto, the heroic Alaskan sled dog.

Manhattan and the Bronx have been playing tug-of-war over this former island neighborhood for more than a century.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

This old estate is a remnant of when the Bronx was a popular summer destination for wealthy New Yorkers.

These small stands sell Malian snacks to worshippers and passersby after Friday prayers in Harlem.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

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

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

The remains of what was once the world's steepest passenger funicular.