Cours Mirabeau, the street around which Aix's different areas are situated, is the city's main thoroughfare. The left side of the Cours leads to the Palais de Justice (Law courts) area, which carries onto the Town Hall area and Aix's old town before coming to the city's Sextius district. On the Cours' right side, Mazarin is the first area you come ...Aix-en-Provence Travel Guide.