The biggest house in the world belongs to royalty, as you might have guessed. The world?s biggest house is Windsor Castle, located in England, Berkshire, with a surface of around 484,000 square feet (about 45,000 square meters). Having its structure changed over the centuries, the castle now occupies 13 acres of land, having 1,000 rooms. Along with Buckingham Palace in London and Holyrood Palace in Edinburgh, Windsor Castle is one of the principal official residences of the British monarch. The resident is Queen Elizabeth II that made the castle her home beginning with 1952.

Introduction to Windsor Castle
Together with Buckingham Palace in London and Holyrood Palace in Edinburgh, Windsor Castle is one of the principal official residences of the British monarch. Most of the Kings and Queens of England have had a direct influence on the construction and evolution of the castle, which has been their garrison fortress, home, official palace, and sometimes their prison. The castle?s history and that of the British monarchy are inextricably linked. Its rich history spans almost 1000 years.