During your visit

Food and beverages will be available from restaurants and food trucks at all sites. To avoid single-use plastics, drinks will be served in recyclable “Open Days” cups, available with a small deposit. You are of course free to keep these cups as souvenirs!

Download the official app for interactive maps, real-time updates and more.

Travel light and do not bring any bulky items of luggage with you: there are no luggage lockers available for storing your bags. Note that all bags brought to the Open Days will be inspected at each site entrance. In addition, some underground sites have restrictions in terms of what you can bring with you.

Don’t forget to bring a camera, as you are welcome to take pictures at all sites during the Open Days. We only ask that you respect the privacy of the other visitors.

You can navigate between the various sites using shuttles, while mini-trains will transport you within CERN’s main sites in Meyrin and Prévessin. Maps showing the mobility options will be available on site.

Information concerning health and safety during the Open Days is available on this page.

Getting around

Once you reach your arrival site, you can navigate between the various sites using Open Days buses, while mini-trains will transport you within CERN’s main sites in Meyrin and Prévessin.

Open Days buses

Eight bus lines (A–H) run between the various sites, some of which also stop at Palexpo, Zimeysa, Bricomarché and/or Gex.

Map Routes

Bus schedule

Line	Site	First departure	Last departure
A	Meyrin	8h30	19h10
A	Alice	8h45	19h20
B	Meyrin	8h30	19h10
B	Prévessin	8h40	19h20
C	Meyrin	8h20	19h00
C	LHC4	8h50	19h25
D	Meyrin	8h20	19h00
D	Zymeysa	8h15	19h15
E	Meyrin	8h20	19h20
E	Palexpo	8h30	19h30
F	Palexpo	8h00	18h40
F	LHC4	8h50	19h10
G	Gex	8h30	18h45
G	LHC5	9h00	19h30
H	Meyrin	8h30	18h45
H	LHC8	9h00	19h30