Opera and Milan was cold and rainy the entire time my family was here in December. It rained every day... except for my brother's last day in town! We decided to take advantage of the gorgeous blue-sky sunny day and went to the center of the city... to the Duomo.
We went to the top of the Duomo, where you can walk on the roof! Pretty cool. It is a GREAT view of the city... the surrounding mountains... and the Dumo's piazza.
Thanks to my mom's buddy, Rick Steves, we skipped the loooong line awaiting the elevator ride to the top by purchasing tickets on the right-hand side of the front of the Duomo at the ticket office. Good to know that you can then skip the line and just take the ride to the top!