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

For over 80 years, Mayan ruins stood proudly in a most unlikely location.

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

An abandoned horticulture institute gloomily presides over rows of derelict and vine-wrought greenhouses.

This dilapidated castle-like structure overlooks the Hudson River at one of its widest points and was once home to nuns.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

The loneliest island in New York.

A tiny islet just off Long Island offers a wealth of infectious curiosities.

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

Small monoliths of several varieties of stone sit alongside a wooded path in the Bronx.

On the top floor of an upscale department store stands a lavish restaurant housed in a replica of a luxury French dining car.

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