Prior to the festival each year, Tomorrowland organizes its Belgian Day celebration in Brussels' Grandplatz. This year's edition drew more than 3,000 fans from across the globe on Thursday (July 21).
Tomorrowland festival-goers displayed their national pride with flags at Belgian Day in Brussels' Grandplatz.
Tomorrowland festival-goers enjoyed Belgian Day in Brussels' Grandplatz.
Campers began to arrive at Tomorrowland's Dreamville camping area on Thursday (July 21). Dreamville will play host to 38,000 attendees over the weekend.
Tomorrowland attendees kick off the festival with The Gathering opening party in Dreamville on Thursday night (July 21), presented by AB InBev and Budweiser.
Thousands of festival-goers gathered in Dreamville for The Gathering opening party, presented by AB InBev and Budweiser.
Atmosphere at The Gathering.
Afrojack at The Gathering
Afrojack was one of the two unannounced headliners who performed at The Gathering opening party.
Fans were thrilled to discover that Dutch superstar Tiesto was the second surprise headliner for The Gathering opening party.
High-flying performance artists wowed The Gathering's attendees in Dreamville.
Tiesto closed out The Gathering in energetic fashion on Thursday night (July 21).