The National Archives in Washington, D.C. is the official repository of the United States government's most important documents. It is the home of the Declaration of Independence, the Constitution, and the Bill of Rights, as well as millions of other historical records. Visitors can explore the archives and
From Wikipedia
The National Archives Building, known informally as Archives I, is the headquarters of the United States National Archives and Records Administration. It is located north of the National Mall at 700 Pennsylvania Avenue, N.W. in Washington, D.C. The rotunda entrance is on Constitution Avenue, and the research entrance is on Pennsylvania Avenue. A second larger facility, Archives II, also known as A2, is located in College Park, Maryland.