Passport to the Big Bang
(Image: CERN)

Destination: the Universe, immediate departure

Inauguration of Passport to the Big Bang (Image: CERN)

How would you like to take a tour of an accelerator? The Passport to the Big Bang is an interactive circuit through which you can explore the Large Hadron Collider (LHC). The LHC is the world's largest particle accelerator. Its 27 km ring is buried 100 metres below the French and Geneva countryside.

What is the Passport to the Big Bang?

  • Ten exhibition platforms located above ten key LHC points

  • Riddles to solve with your family

  • The LHC Mission challenge

  • A cycling route

No reservation is necessary, and the platforms are freely accessible to the public all year round. So get on your bike and start the mission!


⚒ Some platforms are currently partially or entirely unavailable for maintenance reasons:

  • Mission LHC activity currently unavailable on the following plarforms:
    • Neutrinos stage (Prévessin): Code: 6573.
  • We apologise for the inconvenience. Please report anything on the platforms that is broken or out of service by contacting us.

Caution icon

Caution: in case of frost or rain, the platforms' floor can be slippery.


Where can I get a Passport?

The passport and the map are available in tourist offices and town halls in the Pays de Gex and the Canton of Geneva, as well as Genève Roule (Montbrillant) and Meyrin Roule shops, Pro Vélo Genève, and CERN Reception. You can also download them by clicking on the boxes below.

Once you have collected all the codes, click here to restart the particle accelerator.