In 2000, an international ideas competition was launched to design the first facility capable of controlling the new constellation of 30 Galileo satellites, the European system conceived to ensure the continent’s strategic autonomy from the United States GPS network.

This initiative represented a technological challenge not only for Spain but for the European Union as a whole, demanding a level of performance and technical complexity unprecedented within its field.

Spain would thus become the first of four countries to host this new generation of satellite-based air traffic control infrastructure. Located on the outskirts of Madrid, the project integrates this emerging guidance system with existing centralized control operations and a range of international platforms associated with advanced air traffic technologies.

The site is highly singular. Set within the Jarama river basin, it embodies both the measured horizontality of the Castilian plateau and the latent dynamism of its open, expansive condition. The proximity of military runways reinforces the perception of an uninterrupted, stratified landscape, where ground and sky establish a continuous visual and operational field.

The building is conceived as an interface with this vast territorial horizon. Its northern façade unfolds as a continuous glazed plane, extending beyond its limits to frame distant views across the plain, while foregrounding the powerful presence of aircraft in motion along the adjacent runways.

Simultaneously, the project establishes a precise relationship with the sky. A longitudinal skylight, running parallel to the glazed façade, introduces calibrated natural light into the interior while enabling visual continuity with the celestial sphere. This device operates both atmospherically and symbolically, evoking the trajectories of flight and the orbital logic of satellites.

The roofscape emerges as a topographical construct. It extends and reinterprets the existing embankments and paths of the site, transforming the building into an artificial ground that preserves and amplifies the memory of the terrain. In this way, the project does not simply occupy the landscape but becomes a continuation of it, a constructed plateau. In this gesture resonates the metaphor proposed by Rafael Sánchez Ferlosio, who described Madrid as a condition suspended upon an elevated plane.

Two decades later, the building has not only fulfilled its initial ambitions but has intensified its relevance. It now accommodates the European satellite-based air navigation system, centralized air traffic control platforms, and a range of European and international space-related infrastructures. It continues to develop Galileo-related programs, anticipates the expansion of its activities through emerging technologies, and plays a strategic role within the current critical geopolitical context of the European Union. It stands at the forefront of airspace management, contributing decisively to the security and operational autonomy of the Union.

The building has proven its civic and institutional value, a realized vision that remains open to further evolution. On the occasion of its twentieth anniversary, a return visit reveals a facility fully in operation, yet still oriented toward the future. Its directors reflect with quiet determination, their gaze still fixed on the satellites: more remains to be done.

The complex is conceived to accommodate 40,000 m² of programmatic workspace alongside nearly 1,000 parking spaces, delicately inscribed within a gently sloping, verdant site.

The architectural response seeks to preserve and reinterpret the latent spirit of the landscape, two undulating hills set against a distant horizon of low mountains. The built form is articulated into three elongated prisms, two rendered in glass, ethereal and permeable, and a third, more tectonic in expression, composed of granite and concrete. These volumes are carefully stratified along the natural topography. A fourth cubic volume, also glazed, establishes a measured dialogue with the stone prism, together framing a square that opens toward the broadest expanse of the valley.

The glass façades act as membranes, capturing and diffusing the humid, mist laden atmosphere characteristic of the region, allowing the building to dissolve into its environmental context.

Despite the considerable scale of the intervention, the project aspires to maintain a legible and humane proportion, ensuring that each workspace retains a clear spatial and relational continuity with both the ensemble and the surrounding landscape.

The composition is organized into four primary volumes. The two linear glazed prisms house office functions. The linear stone volume accommodates shared and communal services. The cubic glazed pavilion is dedicated to laboratory spaces.

Between the two parallel prisms, an enclosed atrium emerges, a suspended, almost immaterial void, within which a hovering volume is situated to house the Command and Control Center, evoking a sense of weightlessness and central oversight.

Within the glazed buildings, stone is deployed extensively, both as a partial cladding to the structural framework and as a means of constructing deep transitional thresholds along the curtain walls.

At night, the rear façade of the stone volume, facing the mountainous backdrop, is suffused with a blue luminescence, transforming it into a symbolic plane that expresses the civic and territorial vocation of the administrative headquarters.

Due to operational requirements, the building was required to occupy the central area of the complex, on a sloping site overlooking the Nervión valley. However, a conscious effort was made to preserve this central zone, topographically understood as a geometric point of inflection, as free and unbuilt as possible. To this end, the project is resolved through the fragmentation of the program into two low-lying volumes, carefully adapted to the natural gradient. The terrain itself penetrates the building, flowing between both bodies.

The division of the program and the embedding of the volumes within the ground mitigate the presence of built mass at the most significant point of the site, which also constitutes the convergence of visual axes from the surrounding buildings. Ultimately, the intervention aspires to a condition of minimal occupation, an architecture that, metaphorically, refrains from “taking the air.”

The interior spaces, level with or subtly sunken into the ground, recover a vernacular sensibility rooted in Basque architecture, characterized by its tactile and climatic proximity to the humid terrain and its dispersed relationship with the landscape.

One of the volumes, elongated in plan, accommodates the primary workspaces. The second volume contains technical areas, open-plan rooms, lecture halls, and multipurpose spaces. A continuous glazed façade opens onto the slope, establishing a direct visual and spatial relationship with the surrounding landscape. Courtyards and gardened embankments, resulting from the precise excavation and modeling of the terrain, introduce natural light into all work areas. Illumination is further reinforced through extensive horizontal glazing, aligned with the exterior ground level. Circulation routes traversing this volume and connecting it to the adjacent block are uniformly top-lit, conceived as interior streets and plazas.

In this way, a work environment oriented toward the virtual is enveloped by the tangible presence of sunlight, sky, earth, and vegetation.

The roof of the compact volume is conceived as a fifth façade, a horizontal plane that expresses the diversity of interior uses. Part of this surface is configured as a cobbled plaza that serves as the principal access. Entry and security control are housed within a small, transparent pavilion, reached by traversing the roofscape, moving between aluminum skylights, across the stone platform, and alongside horizontal glazed planes.

The tower, which accommodates systems requiring natural ventilation and elevated communication infrastructures, manifests the technical and immaterial character of the program, emerging as a vertical counterpoint within the composition.