The loneliest island in New York.

Waterway populated with abandoned projects, including a submarine.

Lie in a hammock where George Washington stood.

Four cars from the old system were once on display, but were removed in 2014.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

Elevated freight railway turned wildly successful urban park.

Final resting place of two dozen New York City harbor ships.

Walk into the 19th century without leaving Brooklyn.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

An unrealized dream to wirelessly electrify the entire Earth.

A decommissioned military complex that's now a modern industrial park.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

A crumbling hospital from the 1850s on Roosevelt Island.

Failed state-supported institution meant to rehabilitate students with intellectual disabilities.

A spooky and decrepit mental health facility is slowly being replaced with newer digs.

Underground tunnels remain beneath this abandoned mental asylum.

An abandoned asylum incorporated into a college campus.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.