I have the Hanging Gardens. At first I got it just because it looked pretty but now I really like it because I realized what it does. The time for regeneration is much faster. I have the 4 trees there and with the gathering blessing I get 1,400 food from each tree so it's like 5,600 in extra food plus the farms. And the same with mining plus the gold roads and caravans. I really like the hanging gardens and I think it ups the amount of gathering by the ages, right? I hope so. Bc then if not, I may change it later. But it's useful for now.