Shikang, China

The population of Shikang is just 64,818, a figure that should give pause to any American considering a move there. Bureaucracy appears to be a persistent headache, with locals blaming doctors for failing to cure their illnesses. And the city has seen its share of violence, including a series of deadly letter bombings targeting medical staff in 1999. Overall, Shikang seems like a challenging environment that is likely best suited for those with a high tolerance for red tape and personal safety risks.