Possibly the smallest church in the world floats in the middle of a pond.

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

This tiny little island has, as the name says, just enough room for its single house.

A collection of unique outdoor sculptures surounded by the beauty of nature.

These mouldering mansion ruins remember a time when the Catskills were nothing but luxury.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

A peaceful international sculpture garden in upstate New York.

An old dining hall now serves up ghost stories for lusty locals.

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

Eclectic architecture in the woods of New York.

A six-story treehouse offers spectacular views of New York's Finger Lakes region.

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

A beautifully designed asylum was resurrected as a hotel and art center with a ghost story or two.

An abandoned 19th century quarry in the middle of the woods, remade by unnamed wanderers into a massive series of rock thrones.

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

This abandoned factory on the Hudson River once churned out a million bricks a week.

The first "Hall of Fame" in America was designed by legendary Gilded Age architect Stanford White for what was then the NYU uptown campus.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

Town full of spiritualists, some of whom are mediums, is still in full swing after 130 years.

A winding, cliffside stretch of road overlooking the Delaware River.

A castle built for love, and abandoned due to heartbreak.

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

This old cement mine has been used as everything from a mushroom farm to a recording studio.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.