The European Organization for Nuclear Research (CERN) came formally into being on 29 September 1954. It has changed a lot since then - in the physics it confronts, the scale and complexity of the research instruments it operates, the physical appearance of the Laboratory, and also in its organisational structure.

This chart shows the history of these organisational changes. You can browse it by clicking the name of a department or a decade. 

We are also starting to add links to lists of the relevant departmental reports and, where available, to fulltexts of these reports - this work is ongoing...