#4 – Coachella
One of the most popular music festivals in the United States, Coachella is held over two weekends each spring in California. It originally began to showcase alternative and indie artists but has since grown to include artists from a wide variety of genres. With 190 acts, Coachella has been selling out since 2002 with approximately 675,000 attendees each year. Previous headliners include Red Hot Chili Peppers, Skrillex, and The Postal Service.