Chenggu, China

With a population of just 116,375, Chenggu is hardly the bustling metropolis some expats may have in mind. The city's small-town vibe extends to its infrastructure, which only recently received a major upgrade with the 2014 opening of Hanzhong Chenggu Airport. While the new 2,500-meter runway and 5,000-square-meter terminal represent progress, bureaucracy remains a persistent headache - the airport was first proposed back in 1944, with over 80,000 migrant workers conscripted to build it. For those seeking an authentic, low-key Chinese experience away from the crowds, Chenggu may fit the bill, but the city's limited amenities and connectivity mean it's not for everyone.