This 3D model was originally created with Sketchup 8 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 At least that is what the package said. I bought this in 2011. It is a card model in HO scale. Changed a few doors and windows and put in a new stairway to the roofs. The arrangement remains almost the same. Interior is not decorated as much as the model, but managed to do a few frescos and trim inside. Rooms are clustered around the 2-story atrium. Uses are mostly obvious. You may finish this if you want to. Will be interesting to see how that turns out. Bob