Madrid Metro Stations Unused trackway at Chamartín (lower level) for the planned extension of Line 11, June 11, 2008 Chamartín (lower level), June 11, 2008 Chamartín (lower level), June 11, 2008 Unused trackway at Chamartín (upper level) for use of the future Line 14, June 11, 2008 Chamartín (upper level), June 11, 2008 Delicias, March 29, 2005 Guzmán el Bueno, June 10, 2008 Ibiza, June 10, 2008 Lago, June 10, 2008 Mar de Cristal (lower level), June 10, 2008 Mar de Cristal (lower level), June 10, 2008 Mar de Cristal (upper level), June 10, 2008 Retiro, June 10, 2008 Retiro, June 10, 2008