Building of the Ancient Era Production Cost 65 File:Civ6Production.png Faith Cost File:Civ6Faith.png Gold Cost File:Civ6Gold.png Maintenance 1 File:Civ6Gold.png Technology Image:Astrology (Civ6).png Astrology District Image:Holy Site (Civ6).png Holy Site Required infrastructure Effect +2 File:Civ6Faith.png Faith +1 File:Citizen6.png Citizen slot +1 Image:Prophet6.png Great Prophet point per turn. Allows the purchasing of Missionaries with File:Civ6Faith.png Faith.