Nuremberg in Bavaria deserves a spot in this list. Nuremberg and the surrounded Fraconian swiss was and still is huge in beer production and breweries.
For example the small city Lauf near Nuremberg (30,000 citizens) had more than 900 breweries back then in the middle age until the 19th hundred century.
Sure , often it was just the licence for a family to brew but until today you can find small breweries with a kwnoledge of centuries in this business.
You can believe me that we have awesome beer in any kind of variation. (Smoke beer, red beer, strong beer and so many more)
Prague for sure, Pilsen should be there as well as Copenhagen. Dublin, Boston check.
Well one city near Nuremberg comes to my mind: Erlangen. A university city which celebrates the "Bergkirchweih" (mountain fair) which comes from stocking the beer barrels in the cool mountain cellars. Now they are all beergardens with several breweries.
Oh and don't forget the Nuremberg beerfest with more than twenty breweries....
Well too much information....sorry. If you want more information PM me.