So I was trying to work out which cities are best for building the National Wonders in. I'm not that an expert player of CiV yet, so I had to give it some thought. National College - Science City (Jungle/Food/Mountain) Works best in a science city of course. This means plenty of food for population and science specialists. A few jungle hexes with trading posts on them aren't too bad and a single mountain for Observatory would be ideal. Hermitage - Wonder city (Coast for Sydney Opera House) Not a lot of unique culture production going on outside of the Great Artist's Landmark and Wonders. If you can get it in a coastal city and also get Sydney Opera House for an additional +50% culture, that's just gravy. National Treasury - Capital (with Commerce tradition) This one's more tricky since it's not a percentage increase. It's a flat +8 gold, but the initial point in the Commerce tradition increases gold output in your capital by 25%, so why not turn that +8 into a +10 and build it in your capital. The rest of the national wonders are fairly obvious. National Epic in wonder/specialist city with plenty of food. That +military promotion one in a high production city and the University one in the same as the National College for the extra science. Did I get it right? I have no idea if this is obvious to any seasoned player, but I thought I'd throw it out there.