Washington, D.C., the U.S. capital sits on the scenic Potomac River. It is the center of the country's political life and full of important government buildings and monuments like the U.S. Capitol, the White House, Supreme Court, Lincoln Memorial, Smithsonian Institution, and the Vietnam Veterans Memorial. Also, Washington DC is a key part of tours from New York, Boston, Philadelphia, and more. Get ready for Cherry Blossom Festival NOW! Visit National Cherry Blossom Festival for more details.