If there is something that can bring value for a project even before it's done I can say that are the renders. It's a way to show to the client how it will be the final result or at least show him something near to the real thing. I love this feature, but some people abuse of it, and have the gift to transform simply renders in realistic photos!There are lots of render softwares today, but to reach a good result, just choosing some elements, textures and colors it's not enough. Like the photos, the use of light and angle of the render I believe that are the key points to get a beautiful and realistic image. And as a huge a fan of 3D and architecture I selected 30 images from several styles that are the most impressive renders I've ever seen! 3d architecture render