This wall surrounds the old town of Xi'an. We obtained our tickets at the North Gate which is a bit exciting to get to - it forms the middle of a roundabout so you have to negotiate the traffic to get to it.
We hired bikes on top of the wall - RMB200 deposit required for each bike together with the actual charge for the hire. the hire lasts 2 hours and if you are over there are additional charges. We managed to get round the whole wall in the 2 hours and had a number of stops along the way. The wall is very flat so it is quite an easy and enjoyable ride.
there are cafes and points of interest to stop at. the views, especially on the South side are spectacular. It wasn't busy when we were there except at the South Gate. You are exposed to the sun on the top of the wall so take a hat!More