top 10 things to see and do in washington dc?
['United States Capitol and Capitol Hill. The Capitol, Washington, D.C. ... ', 'The White House. The White House. ... ', 'The Lincoln Memorial. The Lincoln Memorial. ... ', 'The Washington Monument. The Washington Monument. ... ', 'National Mall and Veterans Memorials. ... ', 'National Air and Space Museum. ... ', 'National Gallery of Art. ... ', 'National Museum of Natural History.']