I spent three days in Zhangjiajie in October: two days in the Forest Park and one day for Tianmen Mountain. Here comes the conclusion: Yuanjiajie is the best with Hallelujah Mountain followed by Yangjiajie and Tianzi Mountain Huangshizhai is average Gold Whip Stream is a must-go hiking place and the Ten-Mile Gallery isn't worth spending too much time on; you can skip it if you have a tight schedule. Tianmen Mountain is actually a separate one outside the park which ...