Roskilde

The turn of the millennium found grunge icons Pearl Jam in a very introspective state.

One of Europe's longest-running festivals -- both in terms of how many years it's been around and how many days it runs each year -- Denmark's Roskilde festival has announced its lineup for 2013. Kraftwerk, the National, Sigur Rós and Queens of the Stone Age are among the bands slated to headline this year's event, with nu-metal mavens Slipknot and R&B superstar Rihanna among the eclectic list