Originally Posted by Andehh 
Impressive to see it though, bet it is one hell of a sight in person!
It is
- the ATLAS is huge, but i've not been to the CMS so i dunno what the comparison is..
And to back up what Fraz said, when we visited, they were happy for us to take pictures and video - nothing that they want to keep secret, since it's basically a public science project. And of course, it's free publicity for them!