Qiandao Lake (Thousand Island Lake)

Qiandao Lake ('Thousand Island Lake') was created 1959 when the Xin'an Jiang River was dammed to power Eastern China's first hydroelectric project — submerging two ancient cities (Chun'an and Sui'an, now legendary 'underwater cities' that scuba divers visit) and 1378 mountain peaks (now the 1078 islands). 580 km² of clear blue water — the source of Nongfu Spring bottled water (the most popular in China). Activities: 2-hour boat tour to Five Dragon Island + Lock Island ¥150, mountain biking the lake-perimeter trails, scuba diving to the Chun'an underwater city (advanced divers only, certification required, ¥3000+). High-speed rail from Hangzhou East 50 min ¥75. Best 3-day trip with mid-range lakeside hotels (¥600-1500).