Within the summer 2017 activities, entitled "Kalambaka Library in the Neighborhoods of the World", we learn about the experiments of particle physics and we are connected live with the neighborhood of CERN, the world's largest particle physics facility. The virtual guided tour of the Compact Muon Solenoid (CMS) experiment at CERN will offer students, teachers and the wider audience a unique experience to discover the experimental space of CMS. During the tour, the scientists will interact with the visitors, and will proceed to explain the science and technology behind the experiment as well as take part in an interactive Q&A session.