Describir: The modern metropolis. Its orings, growth, characteristics and planning :

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