The civilized world is comprised of settlements, the Guild Hall itself is independent from civilization but multiple kinds of settlements can be build near or even on the Hall.
Such settlements are:
Villages: https://landofstasis.forumotion.com/t80-village-upgrades#100
Castles: https://landofstasis.forumotion.com/t81-castle-upgrades#101
Temples: https://landofstasis.forumotion.com/t82-temple-upgrades#102
Cities: https://landofstasis.forumotion.com/t83-city-upgrades#103
Such settlements are:
Villages: https://landofstasis.forumotion.com/t80-village-upgrades#100
Castles: https://landofstasis.forumotion.com/t81-castle-upgrades#101
Temples: https://landofstasis.forumotion.com/t82-temple-upgrades#102
Cities: https://landofstasis.forumotion.com/t83-city-upgrades#103