One has been trying to figure out tourism and was looking at wonders You can see their effect when using the tourism lens and then hovering your mouse over them. It seems that wonders produce 3-4 tourism per turn at first and then as they get larger historical numbers they generate 1/10th of their historical number. So the oracle starts as 4 tourism but when I look 150 turns later its around 690 historical tourism generating 7 per turn. Interestingly the Colossus started on 3 tourism and the great lighthouse on 4 so all things are not fair. maybe people could post wonder starting tourism here and do some sums to figure out exactly if it works this way... or has someone already done that?