A former connection to City Island, it has been abandoned since the 1930s.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

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

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

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.

From scholastic to sepulchral - now under reconstruction.

Little Red Lighthouse under the George Washington Bridge.

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

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

One of the last Jazz Age "Wonder Theaters" in New York City.

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

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

A crumbling hospital from the 1850s on Roosevelt Island.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

Once America's longest-manned military fort, now an abandoned hulk.

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