It ain't pretty, and it doesn't smell too good. It's pretty much crumbling right
down onto the street in alot of places. Traffic is ungodly. The most densely
populated city on earth they say and it just may well be. The air is so polluted
that you can see it, just look at the picture. It's definitely a monster of a city.
Well worth seeing though.

Taken from The Citadel, Cairo, Egypt.