The landmark located at 1600 Pennsylvania Avenue is the White House, the official residence and workplace of the President of the United States. Designed by James Hoban and completed in 1791, the White House has been the residence of every U.S. president since John Adams. It features neoclassical architecture and is home to numerous historical rooms, including the Oval Office, the Cabinet Room, and the State Dining Room. The White House serves not only as a residence but also as a center for executive activities, representing the U.S. government and hosting various diplomatic events.