Not so long ago I stumbled on an official list of all the streets in Paris. Looking through the list of over 6,000 roads in the city, I noticed that the first on the list - Chemin de l'Abbaye - and the last - Boulevard de la Zone - are at the outer limits of Paris, and at opposite sides of the city. Would it be possible then to walk through the alphabet, from one side of the city to the other?