Washington Dulles International Airport is a public airport in Dulles, Virginia. It is 26 miles (42 km) west of Washington, D.C. The airport serves the Baltimore-Washington DC-Northern Virginia metropolitan area and the District of Columbia. It is named after John Foster Dulles. He was the Secretary of State under Dwight D. Eisenhower. The Dulles main terminal is a well-known landmark it was designed by Eero Saarinen. The airport is run by the Metropolitan Washington Airports Authority. Dulles Airport covers an area of 11,830 acres (47.9 km2). It is on the border of Fairfax County and Loudoun County, Virginia.