Practical information

General information and advice

  • 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.
  • Some activities are restricted to visitors over the age of 12. Verify any age restriction using our interactive map of activities. 
  • Please be aware that a maximum of two underground visits will be possible per day, per person, to give as many visitors as possible the chance to explore our underground facilities.
  • If you plan to go underground, closed and flat shoes are mandatory. 


Getting here

Travel green. Use public transport and means of transport other than cars as much as possible. There will be access for bicycles and more buses and trams will be available to bring you to CERN sites. 
Detailed information on parking for cars and bicycles, public transport and shuttle services for each of the Open Days sites will be available soon under Plan Your Visit. This information will help you plan the best itinerary for you.


Accessibility for persons with reduced mobility 

CERN Open Days is accessible to persons with reduced mobility (PMR). CERN is working to ensure all visitors enjoy a safe and comfortable visit. 
Dedicated parking will be provided for vehicles bearing the official badge for PMR, with shuttle services to and from CERN sites. Details will be provided under Plan your Visit.


Eating & Drinking

Food and beverages will be available on all Open Days sites. In addition to CERN restaurants, a selection of food trucks will be set up across the sites. 
All food trucks and restaurants will be shown on the CERN Open Days app.

Health & Safety

For specific questions, visit the FAQ section.

Question Mark

If you have any questions, do not hesitate to ask a CERN volunteer (everywhere).


You are allowed to take photos. You can photograph or film anything you wish but please do not violate the privacy of individuals.


Wear appropriate footwear. Flat shoes are strongly recommended throughout your visit.


For your own safety, please stay inside the visit area at all times and pay careful attention to the safety signs.


If the evacuation alarm sounds, you must follow your guide and evacuate the building calmly.


Backpacks are allowed on the CERN sites, but they are not authorised for certain tours.

Childcare Children should be accompanied by adults at all times


First Aid

CERN has a medical service and trained first-aiders. You can find the closest First Aid point by following the signs, or ask a CERN collaborator. Please do not move anyone who has been injured.

In the event of an emergency or incident, call: +41227674444


CERN does not allow luggage on tours.


Pets are not allowed on the CERN site except for medical reasons. In such cases, please contact a CERN collaborator.


All unattended baggage will be removed and may be destroyed by the police. CERN accepts no responsibility in such cases.


Smoking is forbidden in all enclosed or covered spaces on CERN`s premises.


Backpacks are not authorised in the underground areas.

selfie stick

Selfie sticks are not authorised in the indoor visit areas.

high heels

Open shoes, high heels, sandals and flip-flops are not permitted in certain areas.


Caution: people wearing pacemakers are not authorised to enter certain areas. Pay attention to the signs and please enquire if in doubt.