The Town was the colloquial term used to describe the town that the Guild Hall resided in. Because of the Collective's inclusion of a multiverse and the multi-points theory, the "Town" can be whatever city a given writer's lore dictates.
Generally, the Town's name is a translation of "Union" or "Collection", whether it is in a real-world or fictional language.
The below information is strictly for use of those who want to include this into their lore.
The Guild Hall was built long before the Collective took up residence or the Town was even established. It predates all known records of the areas and is suspected to be a multi-universal constant; it existed in all universes, simultaneously, acting as a bridge between worlds.