A mansion is a big grand house, usually with two stories and sometimes more. A mansion often has beautiful architecture, and shows that the person for whom it was designed and built was rich. Mansions often have beautiful gardens. Sometimes a mansion does not belong to a private family, but to a town council, to a big business company, to a church or college and is a place for a person with an important job to live and to entertain guests. A mansion often has rooms which are not found in ordinary houses, such as a drawing room, a ballroom, a library and a music room. Mansions often need servants to help keep them in order and there are often special rooms where the servants do particular jobs such as cleaning the silver tableware. Well-known mansions are the White House in Washington, D.C. where the President of the United States lives and Mansion House in London where the Lord Mayor of London lives.