While I was in Cairo, I kept thinking the Egyptians should check out Istanbul. Both are megacities with over 10 million people. Both come from a poor and chaotic recent history. While Cairo struggles, Istanbul is zooming ahead. Just driving into town from the airport, I noticed landscaping along the highway (with fences to keep people out of the new gardens) and a clear delineation between people and traffic zones. While the architecture was still ramshackle/charming, there was almost no litter. It felt like northern Europe from a tidy point of view.