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 Here is a picture of the corner keep. The link to the model is at the bottom. The model is by Double E, the corner keep is by someone else along with the walls. Thanks, Bob. Feb update... Corner keep and walls are by Castle Creator. Found them in my archives.