Completed in 1919, OHEKA was the creation of the so-called 'King of New York', German Jewish financier Otto Hermann Kahn, pictured here, who is best known for reorganising the Union Pacific Railroad with rail tycoon E.H Harriman.
The businessman and philanthropist purchased 443 acres of land in Cold Spring Harbor, Long Island, in 1914 for $1 million (£800K), more than $31 million (£25m) in today’s money, and set about building the home of his dreams. In case you are wondering at its name, it became known to everyone as OHEKA Castle, styled in uppercase, as it is an acronym taken from Kahn’s full name Otto HErmann KAhn.