Colleges, University, Academy A site which is not aligned with any specific faction. A College may emerge after some time in the World, and generally takes the name of some nearby settlement. After a time, emissaries from the College will ask you to provide Scholars for then. Scholars who go to University may get further levels on skills and even some knowledge they couldn´t find home, and also some aleatory effects. Skilled Scholars may compete for Degrees in the University, which will make them even more skilled at the cost of some animosity with the people/factions they best at the competition. A Degree-holding Scholar may host or participate in Symposiums which are fame-boosting for your civilization. When a cluster of Colleges form around a place, they may become a University, almost a town by itself. Presence in Colleges and Universities may allow Student Exchanges, where members of other civilized races stay at the fortress during a given period of time. A massive University would be dubbed an Academy.
Stadiums, Arenas and Colliseums Built nominally by some faction, Stadiums would allow competitions between teams of two civilizations, or individuals from many ones in non-fighting sports. Carnivals allow the same, but for Performers. Arenas are for fighters. A complex of Stadium, Arena and Carnival would be dubbed a Collisseum, allowing all types of competition at once. An even more massive Colisseum would be an Circus.
Advanced Post, Garrison , Hegemony A fortress manned by one or more civs, generally against another civ or for civilizing a dangerous place. A present site of this type will make the place less savage within time, if not getting destroyed by the locals or abandoned. A source of some commerce when manned, and raw materials when abbandoned. Some commerce routes will pass by them. A player can be asked to send soldiers for a friendly garrison as part of an alliance, and also can ask allies to do the same for a garrison he owns. A post can grow in importance not just by the size of its garrison, but also the presence of diplomats and nobles in it. A Garrison becomes an Hegemony when one civ predominates on it, evolving in a fortified city controlled by it if not contested. A civ which sucessfully achieves many hegemonic encroachments against other ones, may become an Empire capable of fielding multi-national, multi-racial forces.
Archology or Landmark An mega-project build by an civ or group of friendly civs using common resources. The Landmark will be an Historical event with great effects in the building civs as well in the world.
Volunteer Camps Can be used by civs to provide manpower for Landmarks. Volunteers are people captured by civs in wars or outrightly bought up from raiders or kidnapped. Volunteer camps are a source of disease and criminality, as they will produce raiders who will try to snatch your citizens or passing caravans in volunteering. Also, there will appear from time to time volunteer refugees asking shelter, and volunteer foremen looking for the escaped, both through bounties and through salvage raids. As the ages progresses, use of volunteers or participation in their trade becomes more and more stigmatized, and will considered a sign of evil civs. At a cost, however, is possible to send problematic nobles, scholars and justice offenders to Character Building Camps, private institutions where they work raw resources until becoming literally new persons.