Taihuyuan is located in the south of Tianmu Mountain in Lin'an. It is the source of Taihu Lake. The mountains and streams make it famous for its coolness. Taihuyuan presents canyon topography. The Long Longxu Valley is the main attraction, also called “Little Jiuzhaigou” . It is home to many national protected animals such as samburs and macaques. In the scenic area, Baizhangji waterfall flowing down against the rock, dropping more than 100 meters, is one of attractions worth seeing in Taihuyuan.