Glastonbury and Coachella and Comic Con.
Honestly most the festivals I like are 3000 miles away from me, even some of my favourite artists like J Cole, Kendrick, Post Malone and loads of others. I guess it depends on where we live and grow up that defines our tastes as well. I guess Britain is not up to the level for festivals as it is in America.
I mean it's amazing here, not quite US level, but good in terms of the amount of festivals. Just not so good for variety.