There is a market in Piazza Navona in Rome, which has food stalls, very cool artisan Christmas ornaments for presepi (manger scenes), a carousel and a puppet theater. It's a great season to be in Rome, because even though the days are short, the temperatures are moderate and the streets are beautifully lit. Small streets are draped with white lights, and large streets like Via del Corso have an elaborate display and there is a passegiata every evening. Every church will have its own scene, and there is a tree lighting and big display at St. Peter's. The atmosphere is festive and except for Dec. 26, and January 1, restaurants are open and busy. Christmas runs through January 6, at which point seasonal retail sales begin and everything quiets down. I love Christmas in Rome!