I have been here before. This is actually the second time I have dreamt about this place. From the exterior, the mall sits on a body of water, in the ocean essentially. The top of the mall is made mostly of white concrete and is primarily designed for moving vehicular traffic into and out of the massive underwater parking lot. It's difficult to describe for me.
The day was calm, sunny I believe. I remember driving and seeing the top of the mall protruding from the water, surrounded by supported roads. It was nothing miraculous.
Flash. I was standing in a room talking with a lady who ran the servers for their organization. We joked about something dealing with IT support.
Flash: We were walking through the mall. We got to a small choke point where traffic could only go one way at a time. I remember looking down and having a major feeling of vertigo although there was not much room in the area we were walking I got a great sense that the mall was built vertically and that we were very high.
Flash: Lynn, myself and a friend of mine Chris, were in a giant room that was designed like a childrens playground. There was sand and water on the floor, like little beach pools for children to play in. At one point I remember getting very upset because my camera had gotten dropped in the sand (it was my EOS 20d). It was completely covered in sand.
I remember standing near one of the many towys (like a swing, seesaw, or something) and a little girl looking at me with the wish that I move so she could play on it. I moved, but then I woke up.