The Large Hadron Collider (LHC) is the world's largest and most powerful particle accelerator, located near Geneva, Switzerland. It consists of a 27-kilometer ring of superconducting magnets and detectors that collide protons at nearly the speed of light. This allows scientists to study fundamental particles and forces, helping to answer key questions about the universe. The LHC was built by the European Organization for Nuclear Research, known as CERN. It has made significant discoveries, including the detection of the Higgs boson, a particle that gives mass to other particles. The LHC continues to be a vital tool for advancing our understanding of particle physics.