The Great wall of China was a special experience for me as it marked an event which one could call an “iconic site”. It reminded me how grateful I am for the opportunity to travel.

Travel also teaches you things you could not have imagined,

for example in the following picture “what is not wrong ?”

Yes, When the wall was built they did not ensure all bricks (Especially the railings) were laid horizontally but often kept the bricks horizontal to the surface, and as you can see from the previous photo, in this area the landscape more than “undulated”. As a result the wall has often collapsed on the steeper hills.