An abandoned military bunker that has been transformed into an artist's paradise.

This huge work of functional public art replaced a landfill in New Jersey's Meadowlands.

The drawbridge used in the filming of the movie 'Annie' has been in the open position as it was in the movie for decades.

A trompe-l'oeil statue honoring the first guide dog in North America.

A world-class collection of mechanical musical instruments and automata.

A cemetery that holds graves for the forgotten children of a burned orphanage.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

A museum dedicated to the history of electric interurban transit near the home of the first electric trolley system in the United States.

A billionaire heiress' menagerie of animals were lovingly laid to rest on the grounds of her former estate.

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.

Glacial erratic or man-made dolmen? It probably wasn't druids.

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

In Cold Spring, New York, a shrine containing Godzilla and an assortment of plastic dinosaurs stands dedicated to a teenager who died in a car accident in 1996.

100 massive sculptures in the Hudson River Valley.

Neon signs that grace the windows of Bergdorf Goodman's and Tiffany & Co. come from this studio in Brooklyn.

The life of one of FDR's possible mistresses is preserved in her palatial Hudson Valley mansion.

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

A unique work of art that was created without permission.

A living antique aviation museum in the historic town of Red Hook, New York.

The abandoned ruins of America's first private zoo are open for exploration in the Catskills.

Three acres of mythology-inspired sculptures are visible from the highway.

At this farm in upstate New York, the former president plotted his reelection campaign.