Zengwen Reservoir is the largest reservoir and the largest manmade lake in Taiwan. It is also the largest scenic area in southern Taiwan. It is situated in the upper reaches of the Zengwen River, on the borders of Tainan City and Chiayi County. Its main purpose is to regulate and utilize the water resources from the Zengwen River to improve the water productivity of the Jianan area. The mists and ripples of the lake, and the reflection of the mountain scenery on the lake, create a majestic and beautiful landscape. Standing by the lake, one can feel both relaxed and refreshed. With its magnificent resources, unmatched in southern Taiwan, this broad, extensive scenic area has great potential for tourism development. Ten recreational activity centers have been built, including an administrative center, a waterside amusement area, a papaya garden hotel area, a large dam landscape area, and lakeside villas.