Afforess
The White Wizard
I know they are sort of place holders but having world or national wonders where you can have more than one just does not work. Mainly because you can go on building them after you have built the max number each new one causes the oldest existing one to disappear.
That got fixed in the UP a while ago. It's not an issue anymore.
fyi, I just tried a game of RoM with the lot - there are problems. For example I got the 11 forges event and the next turn I with only 8 it said I had completed the quest! Similarly some buildings you can build again, and again, and again!
In AND, any building that the forge upgrades to also counts for completing the quest. Was this the case?