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

The home of aviation trailblazers, in a remote corner of the big city.

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

A beautifully designed asylum was resurrected as a hotel and art center with a ghost story or two.

The "last holdout of the Confederacy” actually sat at the edge of the Canadian border.

A collection of the best toys ever made, The National Toy Hall of Fame is filled with kids, fun, and for some reason, a bird preserve.

A bar, burger joint, and arcade housed in a late 19th-century church building.

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

Manhattan's deadly West Side railroad, which killed hundreds of New Yorkers, is remembered by this simple plaque.

One of the earliest bowling lanes in the U.S. doubled as a sewing school during a time when women had little job opportunity.

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

A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

The origins of midtown Manhattan's anachronistic wooden farmhouse remain a mystery.

The gilded vestiges of a sterling department store can still be found in a Brooklyn shopping center.

The oldest continuously inhabited street in America.

Buffalo's abandoned concrete grain elevators are getting a second life.

This giant boulder is sandwiched between apartment complexes in upper Manhattan.

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.

This slender three-story building has also had several famous residents.

An abandoned tuberculosis hospital moulders on into an uncertain future.

A mysterious, abandoned building rotting on the Brooklyn waterfront.

This dilapidated castle-like structure overlooks the Hudson River at one of its widest points and was once home to nuns.

A preserved factory in the "Home of the Carrousel" is now a museum dedicated to the classic wooden ride.

A crumbling staircase in upper Manhattan is all that remains of one of the most important sites in sports history.