Visits are possible Monday to Saturday from 9h00 until 18h00. For all enquiries or to reserve a guided tour of the CMS site please send an e-mail to CMS Visits at least a week in advance (1 month for larger groups) of the tour date, indicating your preferred date, time and the number of people in the group (maximum group size 48 people).

All groups are requested to make their own transport arrangements to the CMS site.


Please note, for safety purposes or in the event of a major intervention CMS reserves the right to postpone or cancel visits at short notice.

We look forward to welcoming you to CMS.

To visit the CERN Laboratory please contact the CERN visit service directly.