Great Wall of China at Mutianyu

35. Trees Overgrow Wall

The wall was first built in Northern Qi Dynasty (550 - 557). In Ming Dynasty (1368 - 1644), Tan Lun and Qi Jiguang, two famous patriotic generals, rebuilt it in order to strengthen its defensive potential when they guarded the strategic pass. It served as the northern protective screen, guarding the capital and imperial mausoleums for generations.