CERN Open Days

Every 4-5 years, during a “long shutdown”, CERN opens its doors to the public for two special days at the heart of one of the world’s largest particle-physics laboratories.

The CERN Open Days have become a regular feature of the period called the “long shutdown” during which the accelerators stop for around two years, to benefit from upgrades and renovation work.

The last edition of the Open Days happened in September 2019. It gave 75’000 visitors the chance to discover CERN’s facilities, both underground and on the surface. With free admission to debates, film screenings, theatre performances, experimental workshops and dozens of visit points spread all over the site, CERN volunteers take the visitors to the heart of the Laboratory during two days.

Duration

2 days

LHC dipole magnets in the tunnel
Age

from 4 years

Languages

FR, EN, others

Period

Every 4-5 years

Location

CERN sites

Surface and underground visits

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Discover the CERN Open Days 2019

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75 000 visitors

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Meet the CERN teams

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interactive workshops

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Activities for the entire family

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Surface and underground visits

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Discover the CERN Open Days 2019

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