Cycling through Nairobi, Kenya. 

Obviously, most of our cycling was done in rural, if not completely uninhabited, areas, but the Tour route took us through a few metropolises (metropoli?), often in the form of a convoy.  These were great opportunities for us to fill our lungs up with much-needed soot and lead, and while bicycling to feel the kind of terror that you'd experience if you were, say, two inches tall and living in a blender.