Coracera Castle Rehabilitation / Riaño+ arquitectos

Coracera Castle Rehabilitation / Riaño+ arquitectos - More Images+ 29

San Martín de Valdeiglesias, Spain
  • Architects: Riaño+ arquitectos
  • Area Area of this architecture project Area:  1000
  • Year Completion year of this architecture project Year:  2010
  • Manufacturers Brands with products used in this architecture project
    Manufacturers:  JG, OTEP INTERNACIONAL
  • Collaborators: Marga Usero Gutierrez, Almudena Peralta Quintana, Rebeca Hurtado Díaz
  • Technical Architects : María del Hierro, Luis García Cebadera
  • Sponsor : Ayuntamiento de San Martín de Valdeiglesias
  • Architect In Charge: Carlos de Riaño Lozano
  • City: San Martín de Valdeiglesias
  • Country: Spain
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Text description provided by the architects. La Coracera Castle, in San Martin de Valdeiglesias, was declared Historic Heritage Site by the Comunidad de Madrid. It was built in the mid-1400s by Don Alvaro de Luna, Constable of Castile and favorite of King John II. Today it is part private and part public property. In order to revitalize it, it was planned to transform it into a multiple use space, to hold exhibitions, lectures, chamber concerts and activities relevant to its potential use as a Museum of Wine of Madrid.

Site Plan

A basic project was developed with the aim to set the standards to follow in the future restoration, protecting its lands, the nearby surroundings and the areas that could spoil the views from the fortress. The final goal was to turn it into a prime touristic and cultural facility, beyond local and regional limits. A project of this scale, financed with public funds, required very distinctive phases.

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The keep is the outstanding volume of the castle, with a virtually square floor plan and three turrets on the east wall. The average width of the walls is more than 3 meters. Its height, from the ground to the upper terrace is around 20 meters.

Courtesy of Riaño+ arquitectos

The previous state was the product of a renovation implemented 60 years ago. It had a ground floor transformed into a wine cellar, with an access through an entrance from the same period, before the first courtyard and on the south façade. This ground level had a solid brick barrel vault completely plastered.

Por razones defensivas, las entradas se fijaron en huecos elevados. El primero por el muro de poniente,

For defensive purposes, the entrances were in high positions. The first one was on the west wall and the access was through a removable ladder that could be withdrawn in times of danger. The second was on the northeast cube, at the first floor level, and it connected with the so-called “albarrana” tower through a drawbridge.

al que debía accederse mediante escalera desmontable, que permitiera su retirada en momentos de peligro. El segundo por el hueco situado en el cubo nordeste y nivel de planta primera, que mediante puente levadizo conecta con la llamada torre albarrana. 

Courtesy of Riaño+ arquitectos

The two noble floors are reached trough the stairs along the south flank. Halfway there is a small landing from which there is access to the “chemin de ronde” on one side and to the first floor on the other. On this level is what must have been the main hall, probably divided in several rooms. Following the stairs, through a flight of overhang steps of an uncertain date, we arrive to the upper room. This vaulted second floor, which combines medieval openings and more recent ones, had important water damages on the cracks along the curved surface. On this level there is a staircase inside the central turret that leads to the rooftop. The curved hall where it finished is one of the most atrocious interventions implemented in the 1940s, with poorly made mullioned windows along its perimeter, which had to be corrected with less picturesque proportions.


The solution for the former wine cellar is remarkable. Now it is a sample and wine tasting room with independent access from the outside. A metal structure, that reminds of the old metal wine racks still present in some homes, was designed a separate piece of furniture, set apart from the walls, to allow a full view of the vaulted room. The ceiling was used for a small lecture hall, with an entrance from the “plaza de armas”.

Courtesy of Riaño+ arquitectos

The stone structure is not covered when its quality and authenticity deserve it. It was cleaned and repointed with a finish similar to that of the exterior walls. A similar criterion was applied to the brick arches and vaults which, against some theories, were never un-plastered and even it they were, its state of superficial deterioration did not allow its recovery.

Courtesy of Riaño+ arquitectos

Las fábricas pétreas, se dejan vistas, siempre que su calidad y autenticidad lo aconsejen, limpias y rejuntadas con acabado similar al de los paños exteriores. Los arcos y abovedados de ladrillo pasan por un criterio similar, definiendo un revoco para las dos bóvedas de cañón, que en contra de algunas teorías, debe decirse que nunca estuvieron vistas, y aunque así hubiese sido, su estado de deterioro superficial no permite la recuperación.

Los huecos exteriores se cerraron con perfilería de acero inoxidable, tratada al chorro de arena, siempre practicables y con sección de mínimo impacto que permita la completa percepción del hueco medieval. Las dos salas principales quedan directamente conectadas por escalera de caracol metálica con tablero continúo de madera curvada en barandilla.  A todo esto se accede por una nueva escalera exterior de peldañeado metálico, envuelta en dos planos paralelos de chapón de acero corten.

Courtesy of Riaño+ arquitectos

The exterior openings were closed with stainless steel profile, sandblasted, always accessible and with a minimum impact section to allow the full perception of the medieval opening. The two main halls are directly connected by a spiral staircase with a solid curved wood frame as a banister. The access to this whole area is through a new exterior staircase with metal steps, wrapped in two parallel COR-TEN steel plates.

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Project location

Address:28680 San Martín de Valdeiglesias, Madrid, España

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Location to be used only as a reference. It could indicate city/country but not exact address.
About this office
Cite: "Coracera Castle Rehabilitation / Riaño+ arquitectos" [Rehabilitación del Castillo de la Coracera / Riaño+ arquitectos] 29 Dec 2016. ArchDaily. Accessed . <> ISSN 0719-8884

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