When money is no object... Between 2009 and 2012, U2 travelled the world as part of their 360° Tour. The circular stage was overlooked by a 50m-tall metal structure nicknamed “The Claw” and weighed almost 400 tons. To put it all together before each show, they needed a team of 300 technicians and a budget of $23-31 million. After 110 concerts in total, the tour grossed almost $730 million. Numbers big enough to make you dizzy!