As one of the world's most popular bands, U2 has never had trouble drawing massive crowds to their concerts. Such was the case when they played two huge shows in 2001 at Slane Castle, in their home country of Ireland. Drawing 80,000 people each night, the band performed some of their most beloved songs, including "Elevation," "Beautiful Day," "Desire," "Where the Streets Have No Name," "With or Without You," "Sunday Bloody Sunday" and more.