Apart from concept art, AK-ART provides matte paintings. Here is one example, a spot promoting UCSD (University of California, San Diego), which you can check out at: https://vimeo.com/183698905
For the clip, AK-ART prepared a matte painting of the main building - a "reversed" version of the actual structure, visible at 0:21-0:25. Done for Golden Studio, LA.
