The White House, as a term, can sometimes be used to refer to the executive branch of the government of the United States of America, but it more appropriately refers to the building which acts as the home and office of the President of the United States of America. The address of the White House is 1600 Pennsylvania Avenue NW, in Washington, D.C.
The White House, which was initially constructed in 1800, has since gone through many changes, as it was burned down, rebuilt, and expanded upon significantly over time. The White House is now a large structure holding a number of different important elements, such as the Executive Residence, the Cabinet Room, the West Wing, and the East Wing. The White House is a six story building, and covers 55,000 square feet of space, with 132 rooms, 35 bathrooms, three elevators, a swimming pool, a putting green, a movie theater, and more.
The Oval Office is housed in the West Wing of the White House, and is the official office from which the President of the United States conducts his state business. The Oval Office was first built and used by President William Howard Taft, in 1909, though this Oval Office is not the same exact Oval Office which is used by the President today. The Oval Office, much like the White House, is sometimes used as a term to represent the President himself. The Oval Office itself is generally redesigned to at least an aesthetic and cosmetic extent by each President to come into the White House.