I deciding on a Hugh Ferriss design.  I wan't to add fountains and gardens on the terraces though.  Originally I was going to go for the Nazi concrete look with no plants (just huge red Nazi banners hanging down the length of the building).  But I decided on a more present day alternate Earth that is more green concious.

So there are freeways going through the building.  The bridges are sidewalks.

I'm using symmetry (cloning on) to model this.  It will be 1000ft high when finished.

www.youtube.com/user/ShawnDriscollCG