One Last question about sites

[Alneyan]

They both count towards the limit, as they are both magic sites (unlike the temple, laboratories and forteresses).

On the same topic, the capital province does not have any hidden site, but it can gain additional sites via random events (until it reaches four sites that is).

[Duncanish]

Can't gold mines still pop into an already full province? Say, I search and find four sites. Can't a later event add a Gold mine or the like?

[Kristoffer O]

No. Not above four.