Fans roared in excitement and organizers sighed with relief as the Tomorrowland music festival kicked off Friday — two days after a massive fire engulfed the main stage and threw one of Europe's biggest summer concert events into doubt.

Belgium's Tomorrowland, one of the world's largest electronic music festivals, opened its doors as planned on Friday, after the event was thrown into doubt by a fire that destroyed its main stage. After fire authorities and the police deemed it safe,

A fire severely damaged the main stage of one of the most famous EDM music festivals in the world. Here's what to know about Tomorrowland.