Shuidonggou is the earliest excavated Paleolithic cultural ruin that is renowned as the birthplace of Chinese prehistoric archaeology and one of the 100 most meaningful archaeological discoveries of Chinese civilization. Shuidonggou is also the only perfectly intact Great Wall military defense system from ancient China. The unique Yardang landform formed the spectacular views of the ghost city, the skyscraping cliffs and the great valley. They construct a peaceful and idyllic heaven along with the blue sky, green water, bluff, reeds, mandarin ducks, and wild ducks. Meanwhile, the hi-tech motion exhibition and the dangerous army hidden in the valley will make you feel you have been transported in a time machine.