Xi'an's old city wall was built during the Tang Dynasty, in the second century BC when Xi'an was still called Chang'an. It measured more than 25 km in lenght and encircled a city of 36 km². The wall you can see today originated in the Ming dynasty (14th century) and encircled a much smaller city of only 14 km². The wall was built of earth; what you see today is an even later add-on of brick cladding.
The existing wall has four city gates and we entered through the southern Yongning gate, the gate of 'eternal peace':
Here you can see the top of the wall:
And a look below into a front yard:
It was cold this day. At first we wanted to cycle the 13 odd kilometers, then I voted for taking the little electric bus (a suggestion which wasn't received all too well). Then we considered taking a rickshaw, but a glimpse down and we saw a nice tea house. Well, if this isn't fate. So we decided to walk to the next little tower and then have a nice hot tea.
Pa opted for his usual jasmine tea which was remarkably beautiful: