Any decision of the Landmarks Commission involving either the “designation” of a property as a historic “landmark,” or their refusal to issue a Certificate of Historic Appropriateness, may be appealed to the Municipal Council. An appeal to the Council must be made on or before thirty (30) days after the Commission’s decision. If an applicant’s appeal is rejected by the Council, a further appeal may be made to the District Court, provided that such appeal is made within thirty (30) days after the final decision of the Council. The appeal shall set forth the specific reasons and justification for the applicant’s opposition to the Commission’s and/or Council’s decision(s).