Unlocks the Nau ability to construct a Feitoria, unique to Portugal.
Provides +4 Gold and +1 Production. Trade routes sent to this city from Portugal gain +4 Gold and +1 Production. Can only be built adjacent to Luxury or Bonus resources in territory belonging to other Civilizations or City-States that you have Open Borders with. Must be built on a Coast or Lake tile adjacent to land and not adjacent to another Feitoria. Feitorias cannot be removed.