Ordinance amending the Planning Code to designate the fresco titled “The Making of a Fresco Showing the Building of a City” in the Diego Rivera Gallery of the San Francisco Art Institute, located at 800 Chestnut Street, Assessor’s Parcel Block No. 0049, Lot No. 001, as a Landmark consistent with the standards set forth in Article 10 of the Planning Code; affirming the Planning Department’s determination under the California Environmental Quality Act; and making public necessity, convenience, and welfare findings under Planning Code, Section 302, and findings of consistency with the General Plan, and the eight priority policies of Planning Code, Section 101.1.