What is the name given to the official residence of the President of the USA in Washington?

The White House is the official residence of the president of the United States of America. The White House has been home of every president of the United States since 1800. It is a beautiful building. It overlooks well-kept gardens and grounds with lawns and fountains. There are 132 rooms in the White House. The Oval Office is the president's office. It is also the most famous room. Only some of the rooms are open to the public. The Green Room and the Blue Room are among them.