The 6 control points farthest away from the center of the map are just flags out in the open on the street. The inner “ring” of 7 control points (including the center point) all are inside of “keeps”. 6 of the keeps are basically identical to one another, each with a door that enemy players have to break down to gain access to the keep (where the control point flag is). The 7th keep is much larger and is in the very center of the map. That one has 2 doors and 2 walls (a destructible barrier on each side of the keep).