Milan is the main city in northern Italy, and is located in the plains of Lombardy. The most populated and developed region in Italy has a population of approximately 1,300,000 people. Milan is famous for fashion firms and shops, and the galleria Vittorio Emanuele in the Piazza Duomo, reputed to be The World's Oldest Shopping Mall. The city has one of the major financial and business centers in Europe. The English word milliner is derived from the name of the city. Another product is the traditional Christmas sweet cake, Panettone. Milan is also famous for the Alfa Romeo automobile and silk production. Milan is the seat of the Italian Stock Exchange. Fiera Milano, the city's Exhibition Center and Trade Fair complex, is one of the most important in the world. This new fairground is Europe's largest open construction project, making it the largest trade fair complex in the world.