In the Beijing Municipality, the Great Wall extends over 630km. Approximately 50km of the Great Wall was developed for tourism in areas like Badaling. The remainder of the Great Wall was left untouched, making it extraordinarily well-preserved. The Wilderness Great Wall of China is one of these areas which was left untouched, and has retained its wild and antiquarian atmosphere.
Since the Great Wall in Beijing is very long and protected well while most of the great walls in other China areas are not kept well and opened for tourists, it is commonly thought Beijing is the only place to see the Great Wall.
The present Great Wall in Beijing is mainly remains from the Ming Dynasty (1368-1644). During this period, bricks and granite were used when the workers laid the foundation of the wall and sophisticated designs and passes were built in the places of strategic importance. To strengthen the military control of the northern frontiers, the Ming authorities divided the Great Wall into nine zones and placed each under the control of a Zhen. The Shanhaiguan Pass and the Jiayuguan Pass are two well-preserved passes at either end.