Today I bring to all of you the official website of CERN, the world’s largest particle physics laboratory. Here you have the possibility to know the history of world’s powerful particle accelerator, the Large Hadron Collider or LHC. On the multimedia gallery is possible to see pictures of some experiences made in this lab. On this website the user can learn how to visit the lab or to know universities programs. The CERN webpage has also a virtual scientist, is there to answer questions of curious users.