We visited Orange in April, 2008 and were very impressed by the theatre and the Arch. The theater is very well preserved and the tour which is available with hand-held tapes is very interesting and thorough. Sitting in the seats and scrambling up the steps to the top rows brings the history alive. The arena at Nimes is larger, but the theater is just as notable. Check out the restaurant across the street-La Vaca-it's wonderful.