This grand mansion has starred in everything from Bones to Buffy.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

Despite the ever pressing encroachment of urban sprawl this grand New Orleans manse still stands.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

All that's left of the quintessential "cabin in the woods."

Bigfoot prints, Feejee mermaids, and haunted dolls on display in a tiny North Carolina town.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

A historic neighborhood church is reborn as a psychedelic arts collective.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

Quite simply the largest tree in the world (by volume).

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

This grand gothic brewery has been pumping out suds for over a hundred years.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

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

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.