Based on the lyrics of "99 Red Balloons" (To see the lyrics, go here: [link] )
This is actually an idea that I attempted two years ago, but at the time I didn't have the skills to finish it satisfactorily. I spent something like 10 hours on the first version before giving up . ...but I thought I'd have another go at the concept for my Digital Image Design class (the same class I did Tron: The Virus and My Universe for). It's a fantastic feeling to have finally finished this.
As part of the course, we were asked to try as many techniques as we could. I ended up using a bit of photography for the buildings, with heavy repainting. The people in the city must have thought I was such a tourist running around taking photos of buildings! The rest of the picture is all CG painted in my normal technique.
^_< ...and before you ask, yes, there are 99 red balloons.
Amazing. Looks like you did the buildings perfectly and I can't even imagine how much time you spent on this. There are so many little details that just bring this entire image together and it's very impressive.