A ‘protected structure’ is any structure or specified part of a structure, which is included in the RPS. The purpose of the RPS is to protect structures, or parts of structures, which form part of the architectural heritage and which are of special architectural, historical, archaeological, artistic, cultural, scientific, social or technical interest. Every development plan shall include a record of protected structures, and shall include in that record every structure which is, in the opinion of the Planning Authority, of such interest within its functional area.