There have been a few good articles that discuss this recently. http://www.eurogamer.net/articles/2013-02-01-shooters-how-video-games-fund-arms-manufacturers
Featured in the GameTextures Cyber Monday Guide for Vidya Game Artists: http://gametextures.com/blog/2013/12/02/how-to-cyber-monday-for-video-game-artists/
I forgot about this i found a while back, It is concept art on how the park may look, http://shanghaiist.com/2011/02/09/world_of_warcraft_starcraft-themed.php