The artist and New York City icon lived, worked and died in this converted carriage house owned by another iconic artist, Andy Warhol.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

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

The mummified relics of an American missionary.

Records of the dead describe the myriad odd ways people used to die.

A mysterious echo seems to defy the laws of acoustics.

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

A Manhattan office building is home to the world's largest chess board.

More than 300,000 historical artifacts from the famous music venue, from Duke Ellington's handwritten score to The Beatles' booking slip.

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

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

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

The notorious headquarters of a corrupt political machine.

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

This lavish room at NYC's French Embassy is a rare relic from the end of the Gilded Age.

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

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

A way to take your secrets to someone else's grave.

This abandoned caretaker's apartment is one of 13 left in the New York Public Library system.

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

Three acres of mythology-inspired sculptures are visible from the highway.

Salute the leader of the proletariat.

A beautiful collection of architectural ornaments rescued from demolished New York City buildings.

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