Sure, there's Coachella and Lollapalooza in the U.S., but when it comes to music festivals, there's no beating the ones held in Europe. Historically America, of course, has had some defining moments like Woodstock, and certainly still has better jazz, blues, and country music festivals than the Europe, but in terms of variety of lineup, number, and size, Europe is where it's at. Certainly, festivalgoers often have to deal with a bit of rain, but as long as you're in the festival spirit (and come armed with enough alcohol), you appreciate that a bit of dampness is all part of the fun. (Of course you can just go to Sonar, or one of the many festivals in Croatia and not get rained on at all.)
From Denmark's Roskilde to Scotland's T in the Park, to the largest outdoor festival in the world, the storied Glastonbury, Europeans know how to throw a well organized festival with diverse line-ups that include up-and-comers and seasoned veterans alike. Unless you've been to one, though, it may be difficult to imagine how much better an European music festival truly is, but try and imagine seeing Kraftwerk in the heart of Barcelona, Sigur Ros beside a loch in Scotland, Mos Def in an abandoned fort in Croatia, or Prince on an island in the River Danube. You don't get that outside Europe.