Jardim Helena, Brazil

With a population of 129,409, Jardim Helena is no sleepy suburb. The sprawling city is densely packed, rivaling the density of Tokyo and New York. While the economy has shifted from industrial to retail and services, the bureaucratic headaches remain a persistent challenge for residents. Those seeking a laidback, small-town vibe should look elsewhere, as Jardim Helena is very much an urban center with the attendant trappings. For those who can navigate the red tape, however, the city's strategic location and diverse population may hold appeal.