National Archives, 700 Pennsylvania Ave. 202-357-5000
See the US Constitution, Bill of Rights and the Declaration of Independence.
But the Emancipation Proclamation is open to the public just 4 days a year around MLK Holiday Jan. 13-16 Friday-Monday 10 a.m.-5:30 p.m.
US Holocost Memorial Museum 10 a.m.–5:30 p.m. every day, but timed passes are necessary for visiting the permanent exhibit (20 each day from tickets.com for $1.75)