1. AI rulers can start and continue construction of wonders. I'm not sure of all the factors that will go into their decision to do so, but money will certainly be a factor.Building wonders sounds cool.
Just some questions and suggestions:
1. Will AI rulers (independent or vassal) start building a new wonders or continue building an existing one? Especially those with lots of money like Lord Mayor, Grand Mayor and Prince Mayor...
2. As "All wonders will be tied to a province", if a vassal count holds the province, while the bonus income goes into his pocket, will his liege & top liege duke / king / emperor also receive prestige / piety / technology points generated?
3. Will there be any event-only wonders? Like finding an ancient ruin / city / temple in the jungle / on the mountain or cliff or after flooding, (depend on traits & attributes) you can choose to rebuild it as a wonder (leave a base for you to build it when you have money) / study for technology points / dismantle it for timed build time build cost modifier.
2. The top liege of the realm will be the one who owns the wonder so he/she will pay for construction and reap most of the benefits.
3. Wonders will of course be tied in to the event system but I'm not sure if there will be event specific ones.