Plan your visit

CERN Open Days will run from 9 a.m. to 6 p.m. We will close all sites at 7 p.m., so please plan ahead, to allow adequate time to enjoy your visit. Each site has many interesting and exciting activities on offer; plan to spend at least two hours on a site.

Entry is free and for all ages. Some activities are restricted to visitors over the age of 12. Verify any age restriction using our activity overview.

Register in advance to guarantee access to the Open Days and find out how to get to CERN.

For assistance in planning their visit, persons with disabilities should contact us at this address.