File:CERN LHC ATLAS.jpg

This is the ATLAS detector thingie at the LHC, partially constructed, 04 Nov 2005

http://multimedia-gallery.web.cern.ch/multimedia-gallery/PhotoGallery_Detailed.aspx?searchTerm=internalnote:%27Experiments*%27%20keyword:LHC&page=11&order=55

The copyright is held by CERN. Used with what looks like fairly liberal permissions on their website.