I was able spend three weeks in China and Japan on a vacation in 1986. Walking on the Great Wall was for sure one of the highlights on the trip. The walk in some areas is quite steep and the humidity was very high the day I was there. I was not sure if I was going to make it back in time to make it to the tour bus. Don't know if I could make it today, I was spent when I got back to the starting point. I have a lot of pictures but can't put my hands on them right now. There are so many beautiful areas and things to see in China.