This model by Bohr Institute physicist Sascha Mehlhase does not, of course, represent the whole Large Hadron Collider, which is a huge circular underground accelerator. Even at minifig scale, such a model would be enormous. Rather, it represents what is probably the most iconic part of the LHC, the ATLAS detector (Wikipedia). Dr. Mehlhase reports 80 hours of work in the build, about evenly split between design (in software) and physical assembly of its almost 10,000 bricks. [Thanks, Rachel!]