annenberg media ♪ captioning sponsored enberg/cpb narrator: since 19, latin america has been one of eost rapidly urbanizing regions on eart nowhere are the sults more dramatic than in sao paulo, brazil, the third largest city in the world. in this anatomy of a mega-city, we'll explore: the urban geography of immigration and ethnic diversity, thsquatter settlements and self-construction. sao paulo, brazil. with its crowded boulevards and massive skyscrapers, it seems awealthy as any city in the world. sao paulo is unique among latin american cities. in the early part of t, when places like rio de janeiro copied traditional european styles of construction, sao paulo was following a distinctly american model of urbanism. imitating the forms of chicago and new york, sao paulo built upward,gro. but in a huge ring around ty slies a very different,gro. urban environment. here, stretchingoriles, is a city of self-built structures in various stages of completion. they line hillsides and rocky streets where some of sao paulo's newest immigrants struggo build mes om brick and cen where some of s