For the purpose of promoting the historic, educational, cultural, economic and general welfare of the people of the City and all of Idaho through the preservation, restoration and protection of buildings, structures and appurtenances, sites, places and elements of historic interest within the area of the City an Historic District is hereby established by the City Council and Mayor. The boundaries of the Historic District shall be as described in Exhibit A attached to Ordinance 270 on file in the office of the City Clerk. (Ord. 270, 9-8-1998; amd. 2000 Code)