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

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

An abandoned castle owned and ignored by Masons carries a cursed history.

A once grand hotel is being retaken by the wilderness it once capitalized on.

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

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

Collapsing castle on the Hudson river was once the storage site of military surplus business.