The Sixth Floor Museum at Dealey Plaza is a museum located on the sixth floor of the Dallas County Administration Building, formerly the Texas School Book Depository, in downtown Dallas, Texas, overlooking Dealey Plaza at the intersection of Elm and Houston Streets. The museum examines the life, times, assassination, and legacy of United States President John F. Kennedy, and the life of Lee Harvey Oswald, as well as the various conspiracy theories surrounding the assassination.