53 Pa. Stat. § 12134
No construction or erection in any such city of any building, bridge, or its approaches, arch, gate, fence, or other structure or fixture, which is to be paid for, either wholly or in part, from the city treasury, or for which the city or any other public authority is to furnish a site, shall be begun unless the design and proposed location thereof shall have been submitted to the jury and approved by it, except as herein provided, before the final approval thereof by the officer or other person having authority to contract therefor. The approval of the jury shall also be required in respect to all structures or fixtures belonging to any person or corporation which shall be erected upon, or extend over, any highway, stream, lake, square, park, or other public place within the city, except as provided in this act. In deeds for land made by any such city, restrictions may be imposed, requiring that the design and location of structures to be altered or erected thereon shall be first approved by the art jury. Nothing requiring the approval of the jury shall be erected or changed in design or location without its approval. If the jury fails to act upon any matter submitted to it within sixty days after such submission, its approval of the matter submitted shall be presumed.
53 P.S. § 12134