The High Council of Architectural Associations of Spain has presented the 2003 Spanish Architecture Award, which is given out every two years to the works completed during that period, to the León Auditorium, designed by the architects Emilio Tuñón Álvarez and Luis Moreno Mansilla. The building was built by FCC Construcción.

The award-winning work is part of the Hostal de San Marcos and Castilla y León Museum of Contemporary Art (MUSAC), a project designed by the same architects, which is being built by FCC at this time.