One I pondered is how some cities have a primary axis offset a few degrees from N/S, either more to the East or more to the West and how that might be related t

One I pondered is how some cities have a primary axis offset a few degrees from N/S, either more to the East or more to the West and how that might be related to their location in a given time zone with respect to where the sun rises/sets to shine directly down a majority of streets. I think of this in terms of perhaps not placing most streets in a grid where you would have to drive directly into the sun around dawn/dusk for most of the year, but it probably has more to do with the local topography; bodies of water or hills in the way, that kinda thing.