Two bridges

The concerts on the U2 360 tour were said to be the biggest rock shows in history, at least as measured by the size of the infrastructure and the cost of producing them. A big element of the show are these two bridges, used by the band to move from the main stage to walkways in front of the crowd.

The bridges were designed to slide around, and several times during the concert, they moved from left to right, or vice versa.