Where is it?
Worthy Farm, Pilton, Somerset
When is it?
24-7 June 2010
Who's gonna be there?
Loads of huge stars, including the likes of Dizzee Rascal, Florence and the Machine, La Roux, Marina & The Diamonds and Paloma Faith.
Irish rockers U2 were due to headline the festival on Saturday night this year, but lead singer Bono isn't very well so the Gorillaz will be performing instead.
What's it like?
The festival site is HUGE!
Glastonbury has been going since 1970, and it's the festival of festivals.
But forget posh tents and designer clobber, Glastonbury's all about the music, mud and the 175,000 people!
Anything else I should know?
Apart from the mud, Glastonbury's really kid friendly, with loads of things going on in the Kidz Field, Theatre and Circus Fields.
But even better, as long as any under 12s are with an adult who's got a ticket, they can get in free!