Well, I've been in one in Paris, that was considered the biggest at that time and was of 130k square meters. I got lost in it every blessing day as had 5 entrances and I never got to exit where I entered. I had to go there to buy groceries as that was the only on in that business center. This is a small one compared to that :)

I also respect the rules as I don't want any trouble, but I'm also glad I could take these photos.