A 19th century hat factory still stands as a crumbling ruin in upstate New York.

The remains of what was once the world's steepest passenger funicular.

This abandoned cemetery is crumbling into ruin, exposing the artifacts and bodies buried there.

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

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

The oldest continuously inhabited street in America.

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 peaceful international sculpture garden in upstate New York.

A nearly 100-year-old dining car in upstate New York embodies the golden age of roadside dining.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

A legendary speakeasy bookstore returns from the brink.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Become a prohibition rebel.

Ride the subways of yesteryear.

More gold than anywhere else, ever.

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

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Read a book next to a Midtown waterfall.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

A hands-on traveling collection of the innovative devices of yesteryear.