Travelers are voting Smithsonian American Art Museum and Hirshhorn Museum and Sculpture Garden as the best museums in District of Columbia County. You can find 3 museums in Washington, D.C. and 1076 museums in the country of United States. Our members favorite in Washington, D.C. is Smithsonian American Art Museum and Metropolitan Museum Of Art is the top pick in United States. Want more? Check out our map of museums in District of Columbia County.