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 And finally, in this series, is one for the financially limited person who wants a castle-like structure, but has limited space and budget. Thanks, Double E for the inspiration. Have 2 others, but too large for this site. They are about 20 MBs. Bob