I'm working on a trip to France this summer and might be able to fit in a visit to Cern. If anyone has been there and has any advice, I would love to hear from you before I finalize my plans. From what I've read, my only real hope is the standard tours that cover the museum, films, walks, etc. I know that it's impossible to get a tour of the ring (especially if it's running ) and that technical tours are very limited and primarily go to universities, research groups, or professional organizations. In any case, it would be great to hear about others' experiences and any tips to make the trip more interesting.