England: Blenheim Palace

Blenheim Palace is a monumental country house situated in Woodstock, Oxfordshire, England, residence of the dukes of Marlborough. It is 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.
Its construction was originally intended to be a gift to John Churchill, 1st Duke of Marlborough, from a grateful nation in return for military triumph against the French and Bavarians at the Battle of Blenheim. However, it soon became the subject of political infighting, which led to Marlborough's exile, the fall from power of his duchess, and irreparable damage to the reputation of the architect Sir John Vanbrugh.