We almost filled most of space available in our city with only our models.
We designed outline of base according to gradual change of scale (thus change of road width)
We have 2 main roads goes parallel (yet curvy) to wall and other road cross perpendicular to those 2.
So how we gonna label street (perpendicular to wall) is street 1/1000, street 1/500 ... like 1st street, 2nd street in actual map.