I just made mine. My cities, partly conquered, where too far away from each other. To build cities in between would make them be much too close to each other. So I disbanded some apparently worthless cities so that I could rearrange.
Then I noticed one city wasn't that worthless.
The conquered city of London had Great Wall and Pyramids.
I just disbanded that city, only to reorganize my empire. 
Then I noticed one city wasn't that worthless.


