I just returned from Milan about three days ago. We were unable to get tickets to see "The Last Supper" directly from the church, so, in order to see it, we resorted to going on a three hour morning tour of Milan, which included "The Last Supper". I bought the tour offered by Autostradale, with low expectations. We were pleasantly surprised! Yes, the major sights in Milan are all clustered together in the main square: The Duomo (be sure to go up on the roof); The Galeria Vittorio Emanuel (overpriced but gorgeous original mall; and La Scala, which are he highlights of the tour. Bur, surprisingly, the fellow who narrated, Stefano, was interesting, informative, and full of interesting little tidbits. He was especially good at "The Last Supper" offering information about art history, technique, and symbolism. Adter lunch, we went back and walked through the Duomo more slowly, and of course the roof....it is a must.