Line 10 (Madrid Metro)

Line 10 of the Madrid Metro is in fact the product of two lines, the former line 8 from Fuencarral to Nuevos Ministerios and the former Suburbano (also known as Line S) from Alonso Martínez to Aluche, this section being named line 10 in the 1980s. In the 1990s, Madrid planned for these two lines to become one, but there was a problem. Line 8 was large profile and Line S was Small profile, so Madrid decided it was going to rebuild the Suburbano section to fit large profile rolling stock, a feat that took five years to complete. During this process, all island platforms were demolished, tunnels were widened, platforms cut back and stations modernised. Also a new section between Alonso Martinez and Nuevos Ministerios had to be built, with an intermediate station at Gregorio Marañón. Finally once this was all finished, the whole line could use large rolling stock and the line was extended from the New Casa de Campo to Colonia Jardín. The section between Casa de Campo and Aluche was handed over to line 5 which now terminates at Casa de Campo.

On 11 April 2003, Line 10 was extended to Puerta del Sur where it meets Line 12 (also known as Metro-Sur). The last two stations on this extension are in fact outside Madrid and in the town of Alcorcón. Joaquín Vilumbrales is also unique to this line and it is one of the few stations to have an island platform instead of side platforms. On the 22 December 2006, Aviación Española was opened on the existing line between Colonia Jardín and Cuatro Vientos. This station was opened to serve the nearby Aircraft Museum, which the station is named after. On 26 April 2007, the line was extended north from Fuencarral to Hospital del Norte (Hospital Infanta Sofía as of August 2008). The station after Fuencarral, Tres Olivos is a transfer station between the regular Line 10A, and Line 10B, which is the part between Tres Olivos and Hospital Infanta Sofía. The line links the towns of Alcobendas and San Sebastián de los Reyes with Madrid. Proposed plans for Line 10 include the building of a new station between Colonia Jardín and Aviación Española called Dario Gazapo. Also there are plans to extend the line from Puerta del Sur to Mostoles Central and further onto the new Xanadu Shopping Centre. However this is unlikely because Metro Sur already reaches Mostoles from Puerta Del Sur, but via Alcorcón.

Line 10A uses 6-car trains of class 7000, and line 10B uses 3 car trains of class 9000.