Describir: The social dimension of the conservation of historic centres :

           _    _     _  _     _____     ______   __   __    _  _      ___    
  ____    | || | ||  | \| ||  |  ___||  /_   _//  \ \\/ //  | \| ||   / _ \\  
 |    \\  | || | ||  |  ' ||  | ||__      | ||     \ ` //   |  ' ||  | / \ || 
 | [] ||  | \\_/ ||  | .  ||  | ||__     _| ||      | ||    | .  ||  | \_/ || 
 |  __//   \____//   |_|\_||  |_____||  /__//       |_||    |_|\_||   \___//  
 |_|`-`     `---`    `-` -`   `-----`   `--`        `-`'    `-` -`    `---`   
 `-`