This zoning ordinance shall apply to all of the incorporated areas of the city. The use of all land and any buildings or structures located upon the land, and the construction, reconstruction, alteration, expansion, or relocation of any building or structure upon the land shall conform to all regulations applicable to the district in which the land is located except as otherwise provided below. No land, building, structure or premises shall be used for any purpose or in any manner other than is permitted in the district in which such land, building, structure or premises is located except as provided below. The provisions of this zoning ordinance shall be applied to all land, buildings, structures and premises of the incorporated areas of the city on the 23rd day of April 1985. However, the provisions of this ordinance shall not apply to buildings, structures, or land under the control, administration, or jurisdiction of any federal or state agency, or the city where properly exempted by law.