Line 7 of the Madrid Metro originally opened on 17 July 1974 between Pueblo Nuevo and Las Musas. On 17 May 1975, the line was extended from Pueblo Nuevo to Avenida de América and for many years, this remained the length of Line 7. This was a problem as line 7 was very scarcely used. This was solved in 1998 and 1999 when an extension to Pitis was opened in four stages. First, it was opened between Avenida de América and Gregorio Marañón on 1 April 1998, then between Gregorio Marañón and Canal. Thirdly between Canal and Valdezarza and finally between Valdezarza and Pitis. Pitis however is the only station on the Madrid metro to have restricted opening times. This is because Pitis is a very small village, and the station's main purpose is to provide interchange for Renfe services. So most trains only run as far as Lacoma.
Ríos Rosas is a station on Line 1 of the Madrid Metro.
Nuevos Ministerios is a major multimodal rail station on the Madrid Metro and the Cercanías Madrid commuter rail network. It is located beneath the Nuevos Ministerios (New Ministries) government complex and the AZCA financial center at the intersection of the Paseo de la Castellana and Joaquín Costa and Raimundo Fernández Villaverde streets in Madrid, Spain. It services the districts of Tetuán, Chamberí, and Chamartín. The station serves Metro Line 6, Line 8, and Line 10, as well as Cercanías Lines C-1, C-2, C-3, C-4, C-7, C-8, and C-10. It is located in Metro fare zone A and Cercanías fare zone 0.
Ríos Rosas is a ward (barrio) of Madrid belonging to the district of Chamberí.