One of the favourite spots to visit the Great wall conveniently from Beijing is Badaling. Located just beside the highway you can reach Badaling in less than 2 hours from Beijing Center.
On a foggy morning on the Great Wall of China in Badaling near Beijing
This photo is available on EyeEm Market
If you miss to be here early, the tourist busses might have already arrived and it is more like on a crowded marke.
This photo, the conquest of the wall is available at 500px