Blenheim chapel

Dukes of Marlborough and their wives are interred in the vault
beneath the chapel in Blenheim Palace in Blenheim, Oxfordshire,
England. Blenheim Palace 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 1722. It was also the birthplace
of Sir Winston Churchill, former prime minister of the United Kingdom.