Certainly the Great Wall of China is extremely crowded, especially at popular locations. Each year, more than 10 million people the Great Wall. The area called Badaling is the most famous part of the Great Wall. It has enjoyed the visits of 300 world leaders and other important people from all over the world. This is possibly one of the busiest section of the Great Wall of China.
During Chinese holidays, the Badaling and Mutianyu sections of the Great Wall gets traffic of up to 60,000 to 70,000 people per day. That is tremendous traffic for just one day. Imagine the great extent of order and planning that must required to pull off this feat. Surely, the Great Wall of China gets extremely crowded.