The former vestibule of the Pacífico metro station forms part of the Metro de Madrid recovery of historic patrimony project to open it up to the public. Free guided visits to this station, which came into service in 1923 when the Atocha – Puente de Vallecas section of Line 1 was opened, are organised every Saturday of the year.

The original foyer closed in 1966 when the platforms of this line were extended, so new foyers and entrances were built, leaving this one obsolete. The refurbishment of this new museum space has respected the original decoration, designed by the architect, Antonio Palacios, hence joining other historic spaces of the Metro, such as the Pacífico Engine Shed, the Chamberí station or Caños del Peral in Ópera station.