Milan ( or ; ), the second-most populous city in Italy, is the capital of Lombardy. The city proper has a population of about 1.3 million, while its urban area (the 5th-largest in the EU) comprises an estimated 5 million people (former Provinces of Milan and Monza-Brianza, with other Comuni included in the former Province of Varese). The enormous suburban sprawl that followed the post-war boom of the 1950s–1960s has resulted in a polycentric metropolitan area, known as Greater Milan, of 7 to 10 million people, stretching over the provinces of Milan, Bergamo, Como, Lecco, Lodi, Monza and Brianza, Pavia, Varese and Novara. The Milan metropolitan region is part of the so-called Blue Banana, the area of Europe with the highest population and industrial density. In terms of GDP, Milan has the third largest economy among EU cities (after London and Paris) and the largest among European non-capital cities.