Following the merger of Tainan City and Tainan County at the end of 2010, the special municipality of Tainan now encompasses 2,191 square kilometers (eight times the land area of Taipei) and has almost 1.9 million people. Among its far-flung attractions are the hot springs at Guanziling, and the Zengwen, Wushantou, and Nanhua reservoirs. Much…