The world's largest music festival is Donauinselfest in Austria (2.5-3M visitors).
✓ TRUE FACT
Vienna’s Donauinselfest is a massive free festival that has drawn crowds in the millions across a 3-day weekend, often cited around 2.5M+ attendance in strong years. It’s frequently referenced as one of the world’s biggest by attendance. (IFPI)
🤯 "The world's largest music festival is Donauinselfest in Austria (2.5-3M visitors). Crowd control meets bass drops."