An early morning walk through the Medina revealed a very different but strangely familiar city.

The hawkers had not yet opened their doors or arrived to set up for the day. Some litter lay around but surprisingly little. What I did not expect was that familiar sight of graffiti on walls.

I wonder if I might find graffiti in every city of the world and from now on will go looking for it in places I would never have thought.

Perhaps graffiti is the universal art of cities. Time and travel will tell.