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

Journey through various trails to discover a land before time along the Chazy Fossil Reef.

Maybe the only missile installed in a public park, this Cold War leftover was one of the first to carry a nuclear warhead.

Designed as a place for patients to take in the scenery, this tower has a dark history.

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

The oldest living organism in New York City. Maybe.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

A meow-velous tribute to a beloved street cat, made famous on the internet.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This house's itty bitty size means no humans allowed.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A terrific purveyor of natural history objects and curios.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

Abandoned power station once home to a squatter community, now being developed into an arts center.

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

A gardener's enduring labor of love is spread throughout a small Vermont town.

Taxonomy experiment known for quirky collections.

One car at a time please.

The quaint little Vermont town played a quaint little Connecticut town in Tim Burton's "Beetlejuice."

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The remains of a 19th century spring, and the site of an infamous unsolved murder.

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