Building of the Classical Era Production Cost 105 File:Civ6Production.png Faith Cost File:Civ6Faith.png Gold Cost File:Civ6Gold.png Maintenance File:Civ6Gold.png Technology Image:Currency (Civ6).png Currency District Image:Commercial Hub (Civ6).png Commercial Hub Required infrastructure Effect +3 File:Civ6Gold.png Gold +1 File:Citizen6.png Citizen slot +1 Image:Merchant6.png Great Merchant point per turn