The quality of map data has gotten a lot of news with Apple's move into maps. Google and Bing are the sources I always use to look for data center sites and study data centers. Much easier than taking a trip and stare through a fence if you can get that close. If you know where to look you can find Google, Microsoft, Amazon's data centers.
NBCnews has a post on cryptome.org finding the CIA training site for the assault on bin Laden's strong hold.
The original source is here.
Osama bin Laden Compound Raid Mock-up
In No Easy Day, the book written by the Navy Seal about getting Bin Laden, he stated that they trained in North Carolina. If you go to Google Maps and put in these coordinates at Harvey Point Defense Testing (CIA training facility) there is nothing but an clearing in a field. If you go to the lower link in Virtual Globetrotting and look at the same location it appears to be the mock up training facility for the Bin Laden raid. It is not completed in the photo, but there is enough built to say it is an almost exact copy of Bin Laden's compound.