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

Phil Mortillaro uses keys to bring art back to the Village.

A notorious punk house turned co-op.

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

An old abandoned mining town in The Adirondacks where Theodore Roosevelt first learned of the shooting of President William McKinley.

Join in a Seance at the Swedenborgian Church.

A deteriorating 1990s Girl Scout camp in a beautiful lush park on Lake Ontario.

A hyper-luxurious, 12,000- square foot home might be buried beneath Queens, still waiting to protect you from nuclear missiles.

This enormous Hindu temple in Queens serves incredible dosas in its basement canteen.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

A Manhattan Episcopal church with an eerie underground crypt.

The absurd creation is a compulsory destination for selfies in Buffalo.

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

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

A partially hidden wall graffitied by spectators of the 1976 Bicentennial, recently rediscovered.

This mouldering abandoned mental hospital was once a center for progressive healing.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

NYC's legendary underground network for bovine transportation.

The last slot car racing arcade in Brooklyn is keeping the dream of speedy little autos alive.

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

The famous author's cottage hideaway.

A staggering collection of photographs depicting medical, social, and historical change.