Collapsing castle on the Hudson river was once the storage site of military surplus business.

Oldest existing wire suspension bridge in the United States.

A basement pool hall is the front for some of the best Dominican food in New York City.

An isolated beacon with a history of grisly murder and a view of some of literature's greatest inspirations.

Hidden inside one of the world's most well-visited zoos is a secret plaque promising eternal life.

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

This Central New York ghost town was once a prosperous railroad community.

Forgotten under the construction of a new urban roadway is a small, abandoned part of town.

A collection of haunted artifacts chronicles the career of the world's most famous paranormal investigators.

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

Tucked behind New Jersey's abandoned Gingerbread Castle lie the eerie ruins of a once-flourishing paper mill.

This abandoned psychiatric hospital once housed more than 4,000 patients in the middle of a quaint New England town.

These World War I shooting range tunnels are now haunted halls of underground graffiti accessed through the roots of a tree.

The real-life site of Ichabod Crane's infamous gourd attack.

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