"Gnome Chomsky" was once the largest gnome in the world, but is now simply tall for his kind.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

A crumbling hospital from the 1850s on Roosevelt Island.

19th century cemetery hidden in Brooklyn's Prospect Park.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

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

Ride the subways of yesteryear.

A terrific purveyor of natural history objects and curios.

Unrepaired walls from a 1920 anarchist bomb attack.

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.