What is behind the Man’s left shoulder?

Behind the man's left shoulder appears to be a large window with a view of a cityscape. The window has a white frame and appears to be open, letting in natural light. The view outside the window shows a busy city street with tall buildings, cars, and people walking. The buildings appear to be older, likely from the mid-20th century, and the street is lined with trees and other greenery. The man is likely in a high-rise building, likely in an urban area.