KiM BooN L.
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This was a worthwhile stop, just to give some impression of what old Nanjing was like. (Not very much of that exists now). At least three segments of the old Nanjing city wall still exist, and this is one of them. This part is particularly worth visiting because of the massive gate. The wall itself is not as impressive as the city wall in Xi'an/ Beijing, but it is still large, and particularly worthwhile seeing...
The various displays on what the gate looked like through the last 100 years or so were interesting. It was poignant to see the model and pictures of the massive wooden structure that use to be part of this gate. That structure lasted for several hundred years until it was destroyed in the Second World War.
The views over the city and over the nearby river were worthwhile, as well.
When I was there it was not very crowded beside the school children tour group...
After visiting 玄武门, we enter from side "gate of china" at RMB20 n walk bout 2100m to the other of the gate, 解放门... Which ever gate u enter will need payment but if u are able to walk 2000+ m, then u may save abit...
Highly recommended to visit thou....