Dubbed as the world’s biggest open-air music festival, the Donauinselfest was flocked by a staggering 3 million attendees back in 2013. This exhilarating festival is perfect for the young, energetic music fiends who don’t mind getting all sweaty in a sea of people.

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The Donauinsel or Danube Island is the ideal venue for this rip-roaring festival because it already boasts of a wide array of bars, clubs, restaurants, and yes, even recreational activities. Just add international music acts, bands, local DJs and you’ll surely have the most fabulous summer weekend of your life.

And the best part? It’s free!

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Vienna in June—topnotch music, great food, and a swell crowd.