CERN in numbers

This page presents key figures that describe CERN’s sites and infrastructure. For full details, please consult the Patrimony and Site Information.

LAND AND SITES	624 ha of land made available by the Host States (France 516 ha, Switzerland 108 ha) 18 fenced sites covering a surface area of 226 ha (France 177 ha, Switzerland 49 ha) Meyrin site: 78 ha, Prevessin site: 87 ha 24.9 km of fencing
BUILDINGS	About 708 buildings of all sizes covering a total footprint of 450000 m2 About 326 barracks (huts, modular buildings and maritime containers)
ROAD AND GREEN SPACES	55 km of roads covering (including parkings) covering a total area of 643 000 m2 5951 car parking spaces plus 409 for visitors 114 ha of green spaces
UNDERGROUND WORKS	460 underground structures including 57 shafts 188 service galleries of total length 17.1 km About 65 km of tunnel
PREMISES (ROOMS)	1380 floors (excluding roofs and underground) About 17 457 premises (excluding roofs and underground) covering a total surface of 692 000 m2 5827 Offices / Laboratories and 551 workshop / Assembly halls