This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

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

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

Empty, but not abandoned, this cavernous Brooklyn loading dock was once considered the largest individual building in the world.

The factory for the popular Dumbo location, the Greenpoint shop is a quiet gem.

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

An abandoned asylum where patients have been forgotten but their possessions remain.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

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

The loneliest island in New York.

A long abandoned hospital building on the outskirts of NYC.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

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

One of only two commuter aerial tramways in the United States.

The best B-movies filmed on a shoestring budget were born here.

A self-made museum in Queens, New York continues to display the work of a sculptor known for paving his own way.

Two New York rooftops are home to the largest rooftop soil farms in the world.

Nondescript elevator doors open to reveal a stunning, surreal world.

“Wagon Jobber" turned smokehouse magnate's family-owned business is still going strong 100 years later.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

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

Prehistoric park filled with the fossils of dozens of extinct species including Australian megafauna.

Five ancient libraries, little changed for centuries, preserve a medieval archive of Quranic lore and civic documents

The world's largest ship graveyard is the product of decades of corruption.