Chinese Walled Cities 221 BC - AD 1644 - Paperback May 2009 It has been said in China that a city without a wall would be as inconceivable as a house without a roof. Even the smallest village invariably had some form of defensive wall, while the Great Wall of China was an attempt to build a barrier along the most vulnerable border of the entire country. Yet the finest examples of walled communities were China's walled cities, whose defensive architecture surpassed anything along the Great Wall. - Osprey Fortress