The placing of any structure, sign, bulletin board or advertising device of any kind whatever, or the erection of any post or pole or the attachment of any notice, bill, poster, sign, wire, rod or cord to any tree, shrub, fence, railing, fountain, wall, post or structure, or the placing of any advertising, decorative or other device of any kind whatever, on any of the vases, statues, bridges or monuments in any park or parkway is prohibited.
However, the Director of Public Properties may permit the erection of temporary decoration on occasions of public celebration or holidays, which permit shall be in writing, signed by the Director.