I second everything that's been said so far, but feel you could've taken it much further(or rather, really WANTED you to take it much further). And you failed to mention the context of the song here on BOTB!!(about a guy who wants to build a city, etc.) "sa really neat concept and adds to the listening experience to have that image, I feel. The ending as it is now gives me the impression that he only just build his first skyscraper and still had so much more to do; the song feels rather incomplete.
But again, I really did enjoy this.