Located to the west of the White House on Pennsylvania Avenue, the Eisenhower Executive Office Building houses the offices of much of the president’s staff. When completed in 1888 the mighty granite structure was the State, War and Navy Building. Executive staff began using rooms there in the early twentieth-century and by the century’s end the Old Executive Office Building, as it had come to be known, was named for President Eisenhower and given over entirely to executive offices.