The 2 free monster for Landscaping and other things! for any size of Project! Unity 5 UE4 And this cool free one : Lumen rt VIZ 2015 for SKetchup (2015 2016) http://www.youtube.com/watch?v=DJ1gxxp_poA LightUp can go to the WEB! Plugin for you but not for the visitor! http://www.youtube.com/watch?v=6gLetWJduuU

You have an another solution go to 3D warehouse and take skp volumes of Taff Gosh (19 pages ! ) else the plugin Shapes linked shapes.rb

Other 3D software can do the job possibly, but I like to have SketchUp do the thing. I've added some more information to my profile, good point! @mac1 said: Harmpie; Add your profile so we know what resouces you have. What you need is a program having a ambient occlusion filter, don't recall clanup having that. If you have Pro the shell option may do it but don't know for sure, free here. The only others I know are possible Blender and MeshLab