This image is not available for use by anyone else.
Created entirely in Photoshop, using a Wacom Intuos 4 large tablet. Mostly painted (default photoshop round brush) with a few building textures thrown in (my own photographs, taken in Bristol, UK and then shrunk down and twisted this way and that) plus a sky from one of my own photographs, which has been manipulated loads. Took about 1 month to do, mainly weekday evenings here and there.
Siberia is the name of the organization that controls the city. This was done for a short film. Animation would be added later i.e. vehicles, lights etc.
To create a similar image (including revisions) would take between 1 and 2 full weeks work. The cost would be £500 to £1000 ($800 to $1600).