Known as "Americas Attic" the museum offers three floors of exhibitions that explore the rich diversity of American history.  Among the wealth of Americana are the flag that inspired The Star-Spangled Banner , first ladies' inaugural gowns, quilts, cars and locomotives. Popular exhibitions include Information Age, Field to Factory, A More Perfect Union: Japanese Americans and the Constitution , and American Encounters. The museum features permanent and special exhibits.  Check the link to the museum's site below for current exhibits. Open: daily 10 a.m. - 5:30 p.m.; extended summer hours determined annually. Tours for groups and for hearing and visually impaired visitors by appointment; call (202) 357-1481 or (202) 357- 1563 (TTY) Monday-Friday.  Admission: Free Metro: Smithsonian, Federal Triangle. Related Links: National Museum Of American History