Describir: The planning of the modern city; a review of the principles governing :

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