Built with Google sketchup free. Textures were included in sketchup but edited by me a little bit. This whole thing took about 2 hours. Most of that time was spent just thinking about it instead of actually working lol.
Its about 7k' high and based upon the Dubai "
Ziggurt" building. Albeit a lot bigger. I am a bit of a beginner when it comes to sketchup and 3d modeling in general but I hope to get better with time.
The runway thing entering it at the bottom is a large highway leading into underground parking/delivery areas. Above that is parks and whatnot. The parks would be all over the ground level but I chose not to show it because my computer was starting to get laggy and because each park would be different, requiring a lot more time than I have,
Pics!