Impressive. The colors are a little strong, but getting in all those buildings is great (and must have taken quite awhile!) I like how you've built the city up along the coasts like that - it's realistic, and lends to the authenticity of the city. Not sure what program you're using, but reducing the opacity of the large numbers of the sections of city would allow us to see the buildings underneath. Or possibly using light colors to "color code" the different sections, instead of hiding lots of buildings under large numbers.