The rehabilitation and extension of the former military barracks in Briançon proposes more than a functional transformation: it gives a place deeply rooted in the city’s memory a new civic vocation.
Facing the main square, within an urban context undergoing profound transformation and in continuity with the recent interventions reshaping this part of the city, the project builds upon the exceptional value of the existing heritage to establish a new public identity. The former barracks is neither erased nor frozen in time. It is revealed, extended and reinterpreted through a contemporary architecture that intervenes with precision and establishes a careful dialogue with the existing structure.
The project is guided by a simple principle: transform rather than replace. Reading the existing building in order to understand its potential, preserving what still holds value and limiting intervention to what is necessary allows the project to preserve the memory of the place, its material substance and the energy already embodied in its construction. Economy of material, processes and energy therefore becomes a genuine architectural strategy.
A new “head” is added to the former barracks, clearly identifiable yet deliberately non-dominant. Its position extends the axis of Avenue du Général Barbot and gives the complex a new urban presence, visible from the approach to the city. The extension thus becomes a contemporary landmark, capable of accompanying the ongoing transformation of the city while remaining deeply connected to the memory of the place.
Its architecture expresses the idea of an open institution. A generous portico, conceived as a contemporary pronaos, guides citizens from the public realm towards the interior of the Cité Administrative. Transparency, light and the depth of these transitional spaces soften the boundary between the city and the institution. The administrative building is no longer simply a workplace, but becomes an accessible, legible and welcoming space: a true common place.
The materiality of the project reinforces this intention. Prefabricated concrete reinterprets the massive mineral presence of Vauban’s fortifications, transforming it into a lighter and more precise structural language. The repetition and rhythm of its elements create a contemporary expression that remains deeply rooted in the character of Briançon. Glass, in turn, establishes a continuous dialogue with the landscape: during the day, it reflects the mountains and multiplies their presence; from dusk to dawn, it transforms the building into a source of light opening onto the square.
At ground level, the portico extends along the façade towards the media library, creating a spatial continuity between the different public facilities. Through its height, rhythm and materiality, it establishes a connection at the scale of the square and reintroduces an essential dimension of public architecture: its ability to mediate between the city, its inhabitants and its institutions.
Inside, the regular structure of the former barracks reveals a new quality. Freed and brought to the foreground, it becomes the framework for a clear and flexible organisation, capable of accommodating the different administrative services within a legible and orderly composition. The constructive order of the existing building thus becomes the spatial order of the new administration.
Old and new are not conceived as two opposing architectures, but as two moments within a single project. The existing building provides memory, materiality and historical depth; the extension gives it a new visibility and a renewed openness towards the city.
The project therefore seeks the essential: to preserve what has value, to intervene with precision, and to allow a contemporary architecture to emerge from the existing fabric, expressing a new idea of public representation. An architecture that does not merely accommodate administration, but actively contributes to the construction of a shared civic identity and to the transformation of the city.
In this sense, sustainability is not understood as an added layer, but as a way of designing in continuity with the existing context. The compactness of the existing building is leveraged to limit energy losses, while the new glazed atrium simultaneously enhances the overall efficiency of the building and brings natural light deeper into the interior spaces. The envelope, conceived with high levels of insulation and careful treatment of thermal bridges, is complemented by high-performance windows and the preferential use of bio-based insulation materials.
This same logic extends to materiality and time: the project incorporates reused materials, both from the existing building and from external sources, thereby reducing resource consumption and construction waste. The new Cité administrative is conceived as an architecture capable of enduring, adapting and evolving, extending its lifespan and its relationship with the city.
