The Zoning Ordinance shall consist of zoning maps designating certain districts and a set of regulations controlling the uses of land, the density of population, the uses and locations of structures, the height and bulk of structures, the open space about structures, the external appearance of certain uses and structures, the areas and dimensions of sites, and requiring the provision of off-street parking, off-street loading facilities of landscaping. (Amended during the March 2009 supplement.)