Here is the job in Piranesi.
The model was done in DataCad using plans drawn in Microstation and elevations hand drawn!
The original was four times the size.  The picture will take some time to load and is a tight squeeze at 1024x768!

The entourage is a mixture of home brewed and stuff that comes with Piranesi. Shadows were done in PaintShopPro as
this version of Piranesi doesn't. do shadows.