ALEXANDER EB

[Maksimus]

its intentional, many cities had strong stone walls and were under Greek-Dacian-Far East or Chinese influence, not as near as barbaric as German and Gaul faction's at that time, but even they had stone walls in certain cities.
Dacia for example, here the link to how they capital looked like http://en.wikipedia.org/wiki/Sarmizegetusa_Regia
And walls for example
http://en.wikipedia.org/wiki/File:Murus_Dacicus.JPG
roads
http://en.wikipedia.org/wiki/File:Paved_Dacian_road.JPG
solar disc in the city http://en.wikipedia.org/wiki/File:Solar_disc.JPG