I am preparing my own professional Online Classes for creating Environment Concept Arts for Games & Movies. I will focus mostly on environment design and delivering desired mood for the productions. Let me know in the comments below if you are interested? ))
I can't really tell what the people are doing, but the city looks very good. I especially like how there is clearly a slum area of town full of shabby, rundown houses, and then there is the more affluent area with elaborate, beautiful, elegant buildings.