Sobradinho, Brazil

With a population of 72,273, Sobradinho is no quaint village. This administrative region in Brazil's Federal District is a sprawling outpost, a product of the country's mass internal migration. While the city's origins trace back to a humble farmer's cross and a two-story bird's nest, today's Sobradinho is a four-lane commuter hub, shuttling residents to nearby Brasília in mere minutes. Bureaucracy, it seems, is a persistent headache - the city was only officially founded in 1960, despite its long history. Still, for those seeking an affordable taste of Brazil's rapid development, Sobradinho may fit the bill.