Took this screenshot on Garry's Mod from one of the final levels before the Glados Boss Fight. I don't know what it is with this scenario but I just absolutly love the look, the industrial design and textures, the massive pillars with several wired falling down and this never abyss, man I love it
i like how both portal games made you seem so small and insignificant in the facility. you're but an ant in this giant maze of a facility