"A hideous albatross in the Hudson River Valley."

This natural rock "church" might not be a proper chapel but that doesn't mean it's not beautiful.

An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.

A unique sculpture park that specializes in the huge and bizarre.

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

A curious friendship between two inanimate ladies.

Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

Site of the first pathological and bacteriological research facility in the United States.

This tiny church near Sleepy Hollow contains Henri Matisse's last work, a rose window, and nine windows by Marc Chagall.

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

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

A former poultry store that looks like a giant duck and is one of the "seven wonders" of Long Island.

The former estate of the Guggenheims, part of the opulent Gold Coast that inspired the Great Gatsby.

The abandoned grounds and derelict greenhouses of this once-magnificent Edwardian estate are now a nature preserve open for exploration.

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

Why have you never heard of the second most popular tourist site in New York?

A crumbling hospital from the 1850s on Roosevelt Island.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

A terrific purveyor of natural history objects and curios.

Elevated freight railway turned wildly successful urban park.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

These mystical miniature houses bring a touch of magic to the New Jersey woods.

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