I don't want to be a whiny bitch but there seems to be a lot of architecture just for the sake of architecture with no real reason or logic behind it. Some of the stuff doesn't even make a lot of sense. It may be futuristic but I think it's always good to say to yourself "why would this be here, what purpose does it serve in the overall context - and how would it be constructed if it existed in the real world, alien, futuristic or not".
The leaves on the stairs in what looks like a completely enclosed area is odd too - if it is connected directly to the outside maybe you could have used lighting to show that.