This is the oldest, the largest and the best-preserved city wall in all of China standing proud at being 600 years old. The vast fortification of the city offers kids a field day where they can walk, jog or even cycle and in most cases, parents join them too. Seeing families cycling using either single bikes or even tandem bikes available for hire is a common sight. Have them enjoy the excellent view of the old city from the top of the wall which is an awesome sight indeed.