Scientists, heads of state, and representatives from many countries came to CERN's Official 50th Anniversary Ceremony 19 October to celebrate the Organization's 50th anniversary, and to praise its contributions to human knowledge while also fostering cooperation between scientists and their countries, across Europe and beyond...
Official Ceremony
Photographs of the Event
Browse the digital guestbook of the official representatives of Member States and Observers
VIP visitors' messages to CERN (about the Digital Pen Technology [+])
Watch the video

On Open Day, CERN was filled with visitors from around Europe-and beyond-who toured the LHC detector sites and visited a multitude of experimental halls and workshops across the Meyrin and Prevessin sites, the vast majority in buildings normally closed to the public...
Visitors' messages to CERN
Winners of the CERN Photoclub Competition