Created by four famous men (Henry Hobson Richardson, Frederick Law Olmsted, Calvert Vaux and Thomas Story Kirkbride), the beautifully designed Buffalo State Asylum was resurrected as a hotel and art center...but still boasts a ghost story or two!

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

100 massive sculptures in the Hudson River Valley.

A forsaken wonder in the middle of the East Side neighborhood.

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

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

Not even a series of devastating fires could keep this odd castle in upstate New York from bouncing back.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

Check out the underground party scene at the "Burning Man of Brooklyn."

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

This public space is speckled with the eerie remnants of a defunct amusement park.