Atlanta Business Journal has a post with a slide of the Google's data center that had a media tour.
But, after looking at the slide show, I found the stuff that Google publishes on itself way better.
First on Google Maps, here is the site.
And there is a whole gallery of pictures on the data center here.
The Douglas County Sentinel also covered the data center with Joe Kava VP of data centers at Google as a tour guide.
This is what the mechanical area looks like with good color matching.
Unfortunately, the photographer had real bad color matching.
Search engine giant Google hosts rare tour of local data center