A panoramic movie of statuary hall and its many statues.  It was the 
former house chambers, a bad choice because of its generally poor 
acoustics.  (Listen to the movie with sound to see what I mean.)  My 
tour guide showed us a funky acoustic trick in this room like one finds 
in a whispering chamber where one person can stand in a particular spot 
far from another and they can whisper to each other and no one else can 
hear them.  The tour guide said that sound travels along a parabola and 
showed us how the shape of the roof dictated which location in this room 
the tricked worked in.