On the northern edge of Paris, along rue Ordener just as it is about to cross over the wide expanse of railroad tracks leading down to Gare du Nord, there is a wall that is the richest and liveliest canvas for graffitti art that I have ever seen. Here it is one day in April, 2006, in all its colorful glory. If you go to see it, you will find it completely different, as it changes constantly. Just don’t park your car next to it overnight, or you may end up a rolling advertisement for the graffitti artists of the 18th arrondissement!