As a German this reminds me of the good old times where we had such a wall straight through the country - in particular, straight through Berlin. The towers wer

As a German this reminds me of the good old times where we had such a wall straight through the country - in particular, straight through Berlin. The towers were also kind-of remote controlled, but the commands were executed by humans rather than machines. </sarcasm> Depending on your point of view, that wall protected the outside from the inside, the inside from the outside, or the inside from the inside.