Something less thought of, but perfectly Parisian, if you ask me. I have been noticing these public markings all about town. Some portrayed with words: French, English, some words uncomprehending, some markings of people, animals, some of simple lines or intricate doodling. Located really in the most enhancing of places; sides of buildings, long blank walls with a seemingly unending horizontal canvas, metro tunnels, and my favorite, on trucks. I really like the element it adds to the classic sophistication of typical Paris. I can recall more than one occasion where I have been strolling about, in a state of, "walking on clouds" and then I turn the corner, or look another direction to find myself entranced with an unexpected punch of bright colors.
Just some examples from one day of strolling.