Up the Wall

The ticket to get into the gate to go up onto the city wall cost me 40 yuan, about $$6. No one told me there was a charge just to get up on the wall. I was a little surprised. Everyone told me that I had to pay 20 yuan, $3, to rent a bicycle for 90 minutes. This picture is a picture of the stairs leading to the top of the wall. The wall is a really big place. I have read where it is the largest city wall in the world. However, I looked up the number of walled cities in the world and the list was overwhelming. There is no way I would want to research all of the walled cities of the world.