Oh I totally get the scale of it and that these are blocks as opposed to individual buildings. I think I was thinking more realistically that the blocks wouldn't conform exactly to the same shape of the roads, but I guess from a Googlemaps style map they do conform a little bit more. I think the reason that it stood out to me so much was that it lacks any side streets, or dead ends that cut into the middle of a building etc, and instead is just a perfect intersection of colour being divided by the roads.