In order to create this final visual, I took nine photographs of the GHA office exterior, and combined them to create an HDR composite. The processing and tonemapping was achieved with Photomatix. The image below is the result before retouching.
The polar bear was added and colour balanced to match the scene. His refelection in the window and the road was also added. Falling snow and snow on the ground was then added. Some retouching was also performed on the building façade.