Each continent on Telon has a quest available that allows you to acquire a document from the ruler of that continent that is needed in order to build a guild hall. These quests require large amounts of Information, as well as other diplomacy items.
Here are the quests for each continent:
All links have images of the (small) guild halls located under the Quest Completion section.
The image below provides a quick glance reference to the types of information needed for the respective hall writs and the parleys which are the means by which to attain the information.