Blenheim Palace is a grand country house in Woodstock, Oxfordshire, England, known as the seat of the Dukes of Marlborough. Built between 1705 and 1722, it was originally intended as a reward for John Churchill, 1st Duke of Marlborough, after his military triumphs. The palace, designated a UNESCO World Heritage Site, combines English Baroque architecture with a unique history as a family home, mausoleum, and national monument. It's also famous as the birthplace of Sir Winston Churchill and has been home to the Churchill family for over 300 years.