He could also try to bring out some of the details in he foreground using the Adobe masking that I have been harping on in this forum. I'm tempted to do it but I am resisting.Wow if ever there was a city of Gold, this is it. Very nice. you might want to crop out the Bottom of black just to crop n a bit.
Phantomrain.org
Gear to fly in the Rain, Land on the Water.