For most people locations that hold a particular importance for the development of our society and for the advancement of science and technology often remain hidden from view. They are separate and protected, such as CERN, the European Organisation for Nuclear Research, close to the city of Geneva. CERN is best known for its giant particle accelerator. Here researchers from around the world take part in a diverse array of fundamental physical research, in the pursuit of knowledge that will perhaps one day revolutionize our understanding of the universe and life on our planet. The Swiss photographer Andri Pol mixed with this multicultural community of researchers and followed their work over an extended period of time. In doing so he created a unique portrait of this fascinating "underworld." The cutting-edge research is given a human face and even if we don't fully understand the processes at work, the pictures allow us to perceive how in this world of the tiniest particles the biggest connections are searched for. With an explanatory text and scientific-philosophical essay.