Irish super group U2 officially announced its 2009-2010 world tour, kicking off in Barcelona on June 30 and playing its first North American date on September 12 in Chicago. The tour, in support of the band's "No Line on the Horizon" album, is the band's first stadium outing since their Vertigo tour in 2005-2006. The album soared straight to top of the British album charts. There will be a number of different supporting acts including Glasvegas, Black Eyed Peas and Snow Patrol. U2 will play in the round, using a new 360 degree design that would have the band surrounded by the audience and give everyone an unobstructed view.
