This 3D model was originally created with Sketchup and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 this was the design for the new world trade center in 2003 but was changed because the buildings were to big and they wanted a propeler on the top of the freedom tower so they had to redesign it