View of the Computer Center during the installation of servers. (Maximilien Brice; Claudia Marcelloni, © CERN)
Assembly and installation of the ATLAS Hadronic endcap Liquid Argon Calorimeter. The ATLAS detector contains a series of ever-larger concentric cylinders around the central interaction point where the LHC's proton beams collide. (Roy Langstaff, © CERN)
Here's some insane pictures of the Large Hadron Collider.