It is strange, the more I look, the more the city appears to be really awkward and…not really planned out. There are some buildings with some light inside at the very center, taller at one side and smaller and darker at the other, all closed up within tall walls and deep holes surrounding those walls.
However that type of construction seemly did not work well when the city grew and they had to expand the town, so other smaller areas sprout from that center, doing the same as the main area; building a wall and a hole, connected to each other by retractable bridges.
And for the looks of it some were still under construction, or rather, maybe they were always building new cities like such.
And that was something that I will only find out later.