Those massive billboards by urban highways have a lot of structure to them; one can imagine them holding a lot more than they do. Imagine if they were inhabited. Brendan O'Grady did this and won big in the Ken Roberts Memorial Delineation (architectural rendering) Competition. It's called "aeroform"- copy below the fold.
"For 33 years, The KRob Ken Roberts Memorial Delineation Competition has celebrated the best in delineation in architecture (architectural drawing). Open to architecture students, professionals and architectural illustrators who are working in the United States, Canada or Mexico, KRob accepts both hand and digital delineation and is the longest-running architectural delineation competition currently in operation anywhere in the world. " ::kRob via ::Bldgblog