Relativisitic Heavy Ion Physics at LHC

The LHC provided collisions of Pb beams at the end of 2010 and 2011 and an integrated luminosity of about 150 inverse microbarn was sampled by three experiments, ALICE, ATLAS, and CMS. Unprecedented conditions of temperature and energy density in the laboratory were reached in these collisions. Selected results from the three experiments and their physical interpretation will be presented.