The nine arrondissements of Lyon are the administrative divisions of the City of Lyon. Unlike the spiral pattern of the arrondissements of Paris, or the meandering pattern of those in Marseille, the layout in Lyon is more idiosyncratic. This is for historical reasons: following the annexation of the communes of , La Croix-Rousse and Vaise in 1852, the newly enlarged city was divided into 5 arrondissements, which originally spiralled out anticlockwise from the Hôtel de Ville (Town Hall); however, as the city's population expanded, it became necessary to split certain arrondissements, giving rise to today's seemingly random pattern.