|   | 
     Argüelles | 
      
        | 
     
       23-03-1944 
      At the terminus 
        Argüelles there is an island platform with two bay tracks. An arrow 
        indicates the side of the platform from where the next train will depart. 
         
     | 
      
        
     | 
  
   
    |   | 
     San 
      Bernardo  | 
      | 
    23-03-1944 | 
      | 
  
   
    |   | 
     Bilbao | 
      | 
    23-03-1944 | 
     
         
          
       
        
     | 
  
   
    |   | 
     Alonso 
      Martínez  | 
      
        
     | 
     
       23-03-1944 
      Alonso Martínez 
        is one of the few stations on the older lines which preserve the original 
        tiling after most stations have been refurbished in recent years with 
        coloured enamel panels. 
     | 
      
        
     | 
  
   
    |   | 
     Colón | 
       | 
     
       23-03-1944 
      Just east 
        of Colón station, Renfe's north-south tunnel along Paseo de la 
        Castellana crosses Line 4, but no direct transfer is provided to Recoletos 
        station, which lies halfway between Colón and Banco de España 
        on Line 2.  
     | 
      | 
  
   
    |   | 
     Serrano | 
      | 
     
       23-03-1944 
      Serrano 
        station lies on the eastern side of Plaza de Colón. 
     | 
      | 
  
   
    |   | 
     Velázquez | 
      | 
     
       23-03-1944 
        
     | 
     
         
          
       
        
     | 
  
   
    |   | 
     Goya | 
       | 
    23-03-1944 | 
      | 
  
   
    |   | 
     Lista | 
      | 
    17-09-1932 | 
      | 
  
   
    |   | 
     Diego 
      de León | 
      
        
     | 
     
       17-09-1932 
      The oldest 
        two stations on Line 4 were opened on a Line 2 branch. They were linked 
        to Line 4 in 1958. 
     | 
    
         
        
     | 
  
   
    |   | 
     Avenida 
      de América | 
      
         
        
     | 
    26-03-1973 | 
      | 
  
   
    |   | 
     Prosperidad | 
      | 
    26-03-1973 | 
    
         
        
     | 
  
   
    |   | 
     Alfonso 
      XIII  | 
      | 
    26-03-1973 | 
      | 
  
   
    |   | 
     Avenida 
      de la Paz | 
      | 
    05-01-1979 | 
      | 
  
   
    |   | 
     Arturo 
      Soria  | 
      | 
    05-01-1979 | 
    
         
        
     | 
  
   
    |   | 
     Esperanza | 
      | 
    05-01-1979 | 
      | 
  
   
    |   | 
     Canillas | 
      | 
    xx-04-1998 | 
      | 
  
   
    |   | 
     Mar 
      de Cristal | 
      | 
     
       xx-04-1998 
      Although 
        there are no concrete plans for platform lengthening on Line 4, the 1998 
        stations have all been built for 6-car trains. 
      At Mar de 
        Cristal Line 8 stops on the lower level, so transfer to the airport line 
        is provided via only one escalator or lift. 
     | 
     
         
          
        
       | 
  
   
    |   | 
     San 
      Lorenzo | 
      | 
    15/12/1998 | 
      | 
  
   
    |   | 
     Parque 
      de Santa María | 
      | 
    15/12/1998 | 
      | 
  
   
    |   | 
     
       Hortaleza | 
      | 
    11/04/2007 | 
      | 
  
   
    |   | 
     
       Manoteras | 
      | 
    11/04/2007 | 
      | 
  
   
    |   | 
     Pinar 
      de Chamartín | 
      
        
     | 
     
       11/04/2007 
      At 
        Pinar de Chamartín Lines 1 and 4 meet on the same level, but without 
        providing cross-platform interchange in a logical direction. There are 
        two side platforms for arriving passengers and one island platform for 
        departure. One level higher the Metro Ligero Line ML1 terminates on an 
        underground viaduct. 
         
     | 
     
         
          
       
        
     |