After many years spent with cleaning and restauration Duomo's marble have been taken back to its past beauty: the with church now seems to be shining in the summer of Milan.Works are still not completed, as you can see in the picture, but almost and the view of the 3rd biggest church of christianity is worth the travel.
If you are thinking about a trip to Italy it's to consider again Milan as an important milestone.
Of course Milan is not only Duomo but really the church is wonderfull.