I missed this thread and i have to say i'm really impressed. You're obviously putting a lot of thought into the layout and style of the buildings whatever way you go about developing them. The Capitol building looks great and the airport renderings are very realistic.
the artdeco tower looks good too, i've never really been a fan of those huge signs but i guess they are quite ubiquitous. Not sure about the font, perhaps something with a bit less filigree.