Blenheim Palace stands as a grand country house in Woodstock, Oxfordshire, England. It serves as the main residence of the Dukes of Marlborough and is the only non-royal, non-episcopal country house in England bestowed with the title of palace. Constructed between 1705 and approximately 1722, Blenheim Palace ranks among the largest houses in England. In 1987, it earned the distinction of being named a UNESCO World Heritage Site.