This sprawling woodland estate was the brainchild of iconic American industrial designer Russel Wright.

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

Hundreds of numbered stakes hidden in the woods mark the graves of the lost souls of a nearby asylum.

Reclaimed by nature, the ruins of Doodletown, New York are remnants of a town consumed by a state park.

A hyper-luxurious, 12,000- square foot home might be buried beneath Queens, still waiting to protect you from nuclear missiles.

The oldest living organism in New York City. Maybe.

The oldest Dutch colonial stone house in New York City is a hidden gem on the border of Brooklyn and Queens.

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

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

A once crucial portion of the Long Island railroad still lays abandoned, waiting to be turned into an urban park.

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

This abandoned ironworks was once the most important military supplier in America.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.