It is slash and burn those nasty prims time. The full sim city got a bit of a facelift when you weren't looking. 350 prims were retrieved for other projects.
This was a cross platform build of a sort. The mates to the three prim buildings (15 for those with scaffolding) are over on OpenSim here in my city. The four of you that care can find the relevant story on my Chic at Ebbe's Place blog :D.
So venture over to LEA7 and take some pretty pictures!