Visit Blenheim Palace the home to the 12th Duke and Duchess of Marlborough and is the birthplace of Sir Winston Churchill. With over 300 years of history to discover and more than 2000 acres of landscaped parkland and formal gardens to explore, Blenheim Palace is Britain's greatest palace and offers visitors a precious time, every time. It is the seat of the Dukes of Marlborough and the only non-royal, non-episcopal country house in England to hold the title of palace. The palace, was built between 1705 and 1722, and designated a UNESCO World Heritage Site in 1987.