Blenheim Palace (pronounced ) is a monumental
country house situated in
Woodstock, Oxfordshire, England. It is the principal residence of the
dukes of Marlborough, and the only non-
royal non-
episcopal country house in England to hold the title of
palace. The palace, one of England's largest houses, was built between 1705 and circa 1722. Blenheim Palace was designated a UNESCO
World Heritage Site in 1987.