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 Gone because it shows the worlds are since 50s to 90s and it shows Russian Communism and U.S.S.R. fall. It is light so theres no need for lamps or windows.