I have a question about the Hanging Gardens. I know there are two effects of the Hanging Gardens (plus GPP and culture) 1. Extra health in each city. This is pretty clear. 2. One extra population in each city. How does the extra population work? Is this a one time only growth when the wonder is built or does it work in another way? What if you found cities after you have built the wonder? What if you capture the wonder from another civ? Thanks in advance!