Tomorrowland

Tomorrowland is the world's leading electronic dance music festival, drawing 200,000 attendees from 200 nationalities annually since its 2005 founding in Boom, Belgium. The festival's spectacular mainstage designs, costing an estimated €15 million annually, transform an ordinary field into an otherworldly realm and are studied by entertainment designers globally. Its attendance is exceptionally international compared to most other festivals on this list, with the majority of ticket holders traveling from outside Belgium.