Cubism "The Tourist"

The steps that Stephen McNally went through to create the image are he blurred some parts, made some parts darker or lighter, used focus, used contrast or saturation, and the zoom in/out. I think there were about 25 or 26 photographs used in the composition. Some of the photos were taken at different times of the day. Yes, there were some post-processing enhancements. No, there are no other considerations.