The Jewish cemetery was surrounded by a high concrete wall; this might have been for reverence or even for security but I think mostly it was to make sure everyone bought a ticket to go inside. We bought our tickets that we were pleased to discover included admission to a number of other sites in the Jewish quarter. This part of the city had been demolished for public health reasons at the beginning of the twentieth century, but the synagogues and the cemetery had thankfully been spared.
I enjoyed reading your post and viewing the photos. It sounds like the Jewish Quarter is full of historical memorials.