It shall be the duty of the City Planning Commission to make recommendations to the City Council on all matters that might be referred to it by the City Council concerning or relating to a comprehensive plan of City building and improvement and to recommend to the City Council from time to time amendments to the City Charter, ordinances providing for the purchase of sites for City buildings, opening, widening or other changes in streets and other public ways, and the ornamentation of such sites, streets, grounds and other public places, and such other ordinances as it may deem necessary and proper in the premises, and that may tend in connection with such comprehensive plan to promote the public health, comfort, safety, convenience, utility and welfare. The City Planning Commission is also authorized to confer and advise with other similar City planning commissions or County planning commissions. (Code 1962, § 2-83)