Presidium

category:national projects
==In Game==
Functions like a Temple and trains Jesuits. Has some garrison space, and the ability to spot hidden units coming into its LOS.
===Overall strategy===
The Presidium is a large, fortified compound dedicated to the propagatation of the Catholic faith. As a variant of the Temple/Basilica, the Presidium has the same abilities as that the former - being mainly capable of conducting Religion research, as well as recruiting Mercenaries.
Note, however, that the Presidium too also has several other traits that make it all the more powerful. Firstly, it is capable of training Missionaries, who have the ability to Bribe enemy units (although they are clearly an inferior choice if compared to the Spy. Still, Missionaries are capable of boosting your units and healing them, and so a Presidium can be a very welcome building .... especially since it is strong, armoured, and can also function as a place of refuge for your units if trouble arises, thanks to its ability to fire back at the enemy. Equally, a Presidium, although clearly stronger and capable of being built more quickly and outside of your national boundaries, costs a LOT in terms of ramp cost — you are going to need lots of Wealth just to construct one. 
As a result, while costly, a Presidium can be a fairly useful building, if you have the Wealth to spare to build one on the fly. You can erect these as "mini-forts" (like the cheaper but weaker Sangars erected by the Portugues and the Netherlands) to help supplement your units. As such, a possible strategy, using Portugal, is to capitalise on the ability to create outposts, first with the Sangars, and then the Presidiums, to form bases from which your units can operate, or to conduct raids far beyond your own borders. Alternatively, you can also use Presidiums to shore up a city you're trying to assimilate by providing your units with a firebase/field hospital to help fend off enemies trying to retake the town.