station became operational in 1919 with the opening of the first section of the Madrid Metro between Sol and Cuatro Caminos. The station of Line 2 was opened in 1924, it was built above the Line 1 station and perpendicular to it. The station of Line 3 was opened in 1936, located roughly at the same level as the Line 1 station and perpendicular to the Line 2. The first sections of the first three lines opened included Sol station. In the 1960s platforms on the Line 1 were enlarged from 60 to 90 m, but bad condition of the foundations of the surface buildings prevented doing that on both platforms in parallel. So one of the platforms was expanded to the north and another one to the south, resulting in the only Madrid Metro station with non-parallel platforms. Between 2004 and 2006, Line 3 platforms were also extended from 60 to 90 m, this time they are completely parallel. At the same time elevators installation began, that allowed access to lines 2 and 3 and from the street to the lobby since 2007. Sol' from 2013 to 2016.At present, the station has four entrances, which, given the large number of travelers, often causes crowds on the stairs. Its interior features a wide central room with decorated ceiling, where are several shops and a police station. On 13 March 2012 Sol station was renamed as "Sol Galaxy Note" for a 1-month contract sponsorship by the company Samsung advertising its mobile device. It was a pilot project of naming rights sale to finance public transportation. From 1 June 2013 to 31 May 2016, for sponsorship reasons, the Line 2 station was renamed "Vodafone Sol". In 2004 work began to connect the station to the Cercanías Madrid network, digging tunnel Atocha-Chamartín, alternative to the previously built one. This tunnel was opened to the public on 9 July 2008 and the station opened on 27 June 2009. The works suffered a 6-month break in 2006 due to discovery of archaeological remains, so the work of the station was considerably delayed with respect to the whole tunnel. From 25 June to 23 July 2008 Line 2 was temporarily interrupted to allow the construction of Cercanías station nearby. The Line 1 service was also interrupted from August to 4 September 2008.
