Bosque Saúde, Brazil

With a population of 664,566, Bosque Saúde is no quaint backwater. This sprawling, industrialized city has all the headaches you'd expect - heavy bureaucracy, a volatile climate, and pockets of high crime. The once-lush forests have been decimated, leaving less than 5% of the original vegetation intact. And while the metro area boasts a booming tech sector, the average commute is over an hour each way. Bosque Saúde is a concrete jungle, best suited for those drawn to its economic opportunities rather than its natural charms.