Minecraft wiki entry for Settlement_guide, associated text: Instead of continuing to group and centralize the services in a town, the society has probably come to a point where the city itself gets so urbanized, that it needs some arrangement. Perhaps make zones to include residential, commercial, industrial places, etc. respectively. More details about this is in the tutorial for Building a Metropolis. Cities are well known throughout the entire continent, and have connections with towns. Capital Cities also contain Government Buildings and maybe even a palace.