Tomorrowland, one of the most prominent EDM festivals in the world, returns to Boom, Belgium for its 13th year during the final two weekends of July 2017 (the 21st to the 23rd and the 28th to the 30th, to be exact). Festival organizers bumped it up from its usual single weekend run to back-to-back weeks in order to accommodate the extra demand. This year, the mega event sold 400,000 tickets—more than ever in its history—as the festival has steadily grown, due in large part to mainstream pop culture’s continued embrace of this decade’s EDM explosion. The annual fest draws people from countries all over the world and is famous for bringing together fans of all cultures and ethnicities to enjoy the common interest of dance music.

The internationally popular three-day European festival is so in-demand that tickets sold out in just over an hour this year. Fans jump at the opportunity to not only experience one of the most well-known and respected events in the dance music realm, but also to listen to their favorite artists, both local and global. This year’s lineup features classic favorites like Tiesto, Armin van Buuren, and Steve Angello alongside the new generation of mega-talent like Marshmello, Alison Wonderland, and DJ Snake.

Among the major attractions that draw partygoers are the décor and stage designs each year. Tomorrowland’s main stage tops its predecessor year by year, and the Internet is already buzzing with alleged leaked photos and chatter about what’s to come. Real rave heads dress up in costume and bring festive accessories like totems that poke above the crowds for groups to identify each other and kandi bracelets to trade with friends, old and new.

For more info on the legend that is Tomorrowland, check out the website, where recaps of each year’s festivities and amazing stages live on for fans to reminisce over. Below, check out the A to Z of everything you need to know about this year’s Tomorrowland music festival. Stay safe and rave hard, my friends.