The above short film The Third & The Seventh by Alex Roman is an incredible example of CGI animation. So good in fact, that it doesn’t on first glance look as though it was entirely created on a computer.
It deals with architecture and photography and the following video explains how it was done:
This video also shows how they did a certain shot:
It not only shows how far visual effects have come but also how cheap the tools are to create something that looks stunning.
[Link vis PetaPixel]