At first this was intended to be a dark scene. A kind of a "destructed" bureau hall. But I don't like dark scenes, so it became a quite sunny one.
The first objects were done quite some time ago. I spent only a little bit of time per day with it. So I can't really say the total modelling time.

I've added some glow and grain afterwards. The grain is pretty visible because I don't like renders that are perfectly smooth.
I hope you'll like it anyways