1.Benicassim

1/11

Benicassim, Valencia, Spain
July 15-19

Who's Playing: Gorillaz, Lily Allen, Vampire Weekend, the Specials, the Prodigy, Hot Chip, Julian Casablancas, many more
Why It Rocks: Fun, relatively dance-y lineup in a gorgeous seaside resort town.
More: benicassimfestival.co.uk

2.Benicassim

2/11

Benicassim, Valencia, Spain
July 15-19

Who's Playing: Gorillaz, Lily Allen, Vampire Weekend, the Specials, the Prodigy, Hot Chip, Julian Casablancas, many more
Why It Rocks: Fun, relatively dance-y lineup in a gorgeous seaside resort town.
More: benicassimfestival.co.uk

3.Rock am Ring/Rock im Park

3/11

Nürburgring and Nuremberg, Germany
July 15-19

Who's Playing: Rage Against the Machine, Muse, Rammstein, Them Crooked Vultures, Slash, 30 Seconds to Mars, Slayer, many more
Why It Rocks: German fans love their music heavy and loud, and this dual-city festival draws 150,000 of them annually.
More: rock-am-ring.com and rock-im-park.com

4.Glastonbury

4/11

Pilton, England
June 23-27

Who's Playing: U2, Muse, Stevie Wonder, MGMT, the Flaming Lips, Pet Shop Boys, the Dead Weather, Vampire Weekend, many, many more
Why It Rocks: Glasto is the king of all festivals, selling out way in advance annually, and setting the benchmark for the rest of the world to follow.
More: glastonburyfestivals.co.uk

5.Reading/Leeds Festivals

5/11

Reading and Leeds, England
August 27-29

Who's Playing: The Arcade Fire, Guns N' Roses, Blink-182, Paramore, the Libertines, LCD Soundsystem, Weezer, many more
Why It Rocks: It might always be second fiddle to Glastonbury, but Reading & Leeds weekend always nabs massive acts, and this year is no exception.
More: readingfestival.com

6.Roskilde

6/11

Roskilde, Denmark
July 1-4

Who's Playing: Gorillaz, Muse, Prince, Them Crooked Vultures, Alice in Chains, the National, Pavement, the Prodigy, many more
Why It Rocks: Outside of the UK, Roskilde is the biggest spectacle, a perennial mud pit, and the campgrounds open a full week before the music starts.
More: roskilde-festival.dk

7.Paleo

7/11

Nyon, Switzerland
July 20-25

Who's Playing: N*E*R*D, Iggy and the Stooges, Crosby Stills & Nash, Jamiroquai, Klaxons, Fanfarlo, many more
Why It Rocks: Situated on the shores of Lake Geneva, this is one of the world's most picturesque locales for a rock concert.
More: yeah.paleo.ch

8.Sziget

8/11

Budapest, Hungary
August 11-16

Who's Playing: Gorillaz, Muse, Bad Religion, 30 Seconds to Mars, Iron Maiden, Kasabian, the Hives, many more
Why It Rocks: Held on an island in the Danube River, this is one of the world's biggest festivals in terms of attendance. Nearly 400,000 people are expected to show up in 2010.
More: sziget.hu

9.Fuji Rock

9/11

Naeba Ski Resort, Japan
July 30-August 1

Who's Playing: Muse, Massive Attack, Thom Yorke's Atoms for Peace, Broken Bells, Yeasayer, Vampire Weekend, Broken Social Scene, Dirty Projectors, many more
Why It Rocks: Although it's no longer held in the shadow of Mount Fuji, this is a gorgeous place to see a concert with 100,000 of your closest pals.
More: smash-uk.com

10.Oxegen

10/11

County Kildare, Ireland
July 9-11

Who's Playing: Eminem, Muse, the Arcade Fire, Jay-Z, the Prodigy, Black Eyed Peas, Fatboy Slim, Wolfmother, Julian Casablancas, many more
Why It Rocks: A massive, well-run UK festival, but outside the overhyped English landscape, Oxegen draws 90,000 people each day to the Irish countryside.
More: 2010.oxegen.ie

11.Sonar

11/11

Barcelona, Spain
June 17-19

Who's Playing: The Chemical Brothers, Air, Roxy Music, LCD Soundsystem, Jonsi, Hot Chip, Flying Lotus, Delorean, many more
Why It Rocks: Focusing on electronic and dance music, Sonar offers a sleek, civilized, and urban alternative to Europe's massive camping fests.
More: 2010.sonar.es