This is such a fun idea. It's an annual event created by David M. Schwarz Architects. Professionals contribute and compete from many states. This year the DC one had a campus theme. In the slide show at WJLA.com, you will find quite a few university buildings:
Thanks for the tweeted link, @CannonDesign.
BTW, Gingertown the event has its own website, gingertown.org. It's a charitable organization that held events in DC, Tennessee, and Texas this year.
Below—an aerial view of the completed town and campus.