With 13.7km/ 8.5 miles, it’s one of the largest ancient military defensive systems in the world!
Biking on the 700 year old city wall is a must do when visiting Xi’an.
With 13.7km/ 8.5 miles, it’s one of the largest ancient military defensive systems in the world!
Biking on the 700 year old city wall is a must do when visiting Xi’an.
