Kaiping Diaolou

The Kaiping Diaolou (simplified Chinese: 开平碉楼; traditional Chinese: 開平碉樓; pinyin: kāipíngdiāolóu, watchtowers) are fortified multi-storey towers, generally made of reinforced concrete. These towers are located mainly in Kaiping County, Guangdong province, China. Kaiping together with its neighbouring counties of Enping, Taishan and Xinhui are collectively known as the "Four counties" (it was from the four counties that many of the Chinese labourers to North America, Australia, and Southeast Asia originated from).

• http://en.wikipedia.org/wiki/Kaiping Diaolou