I'd heard it before and knew it was something to do with the Simpsons but as I have never watched that show I tried Smithfield and a couple of near misses and never arrived at Springfield.
Springfield, Springfield, it's a hell of a town! The schoolyard's up, and the shopping mall's down! The stray dogs go to the animal pound! Springfield, Springfield!
Great quiz. Had them all but had to go back for Stasbourg - because I couldn't remember the spelling when I got to it - went back and never did get it spelled correctly before time ran out. Though I tried the "bourg" ending I think I did it with two "s" each time, unlike "berg" and "burg" and "burgh" which I tried with single and double s... ah well, at least American English isn't alone in its too many variations on spelling!
This is very Europe-centric. Only two answers are in Asia, one is in Africa, none in Australia or South America. And 4 are in North America. the other 13 are all in Europe
Please accept Geneve (the name in French, with or without accents) and Munchen (the name in German, with or without the umlaut) for their respective cities.
Also got stuck at München for a while.