Tianheng Mountain is located on the west side of Penglai Pavilion, Danya Mountain. There is a lighthouse on the mountain. The connection with the old iron mountain lighthouse of Lushun is the dividing line of Huanghai Sea and Bohai Sea. Therefore, it has the geographic position of "one hill divides the two seas". Tianheng Mountain is low in elevation, but the rocks are reddish, with the characteristics of Danya that is "green water and red mountain". Today, Tianheng Mountain has opened up the Tianheng Cultural Park, where there are Qiwang Tripod and Sunzi Hanjian sculptures.