National Museum of African American History and Culture Site, by Hansen, Carl C, January 27, 2006, Smithsonian Archives - History Div, One of four sites proposed for the National Museum of African American History and Culture (NMAAHC). This site ultimately is chosen for the new museum. The Washington Monument, Constitution Avenue, 14th Street in the foreground and 15th Street, and part of the National Museum of American History building are all the picture..