Lens correction for straightening buildings
Lights and darks adjusted with levels
Building color correction with Curves. Little blue
due to sodium vapor lights
Replaced moon, exaggerated and cropped image by
rule of thirds using the moon and 2 clusters of street lights
Added light layer of clouds and a moonlight reflection in the street
Sharpened the background layer to emphasize the "moonlight edges"

forum discussion http://forums.dpreview.com/forums/read.asp?forum=1006&message=24556045

original image by ItalianBostonian