Public Facilities Building in Genève by Lacroix Chessex

A Contemporary Public Architecture Project in the Jonction Eco-District

Located in Jonction, Genève, Switzerland, the Public Facilities Building by Lacroix Chessex forms an integral part of a new-generation eco-district that combines residential density with civic infrastructure. Designed as a 4,600 m² multi-program public architecture project completed in 2021, the building strengthens the urban fabric while introducing high-quality public space into the neighborhood.

Conceived as a civic anchor within the evolving district, the project complements three existing residential blocks and reinforces the transformation of the former Artamis industrial site. Its strategic placement along Boulevard Saint-Georges establishes a strong urban frontage, affirming its presence along one of Genève’s primary thoroughfares.

Urban Integration and Sustainable District Planning

The architectural concept is based on a composition of differentiated yet interrelated volumes. These offset blocks create a compact footprint, freeing valuable ground space for a generous public square that connects to a sequence of open urban spaces leading toward Rue des Gazomètres. This gesture establishes a new gateway to the district and enhances pedestrian continuity within the eco-district masterplan.

By consolidating built mass, the design prioritizes public realm quality, sustainability, and efficient land use—core principles of contemporary Swiss urban development. The building’s compact form reduces land consumption while promoting density, walkability, and community interaction.

The reinterpretation of the traditional “public base” typology is central to the design. The lower levels accommodate more robust, civic-oriented functions, while domestic and child-focused spaces rise above, creating a vertical hierarchy of programs.

Clear Programmatic Zoning: Adults Below, Children Above

The building houses a crèche, sports hall, extracurricular activity rooms, and a multi-purpose hall. These diverse functions are organized through a highly legible spatial strategy.

The adult-oriented programs—the sports hall and multi-purpose hall—are located at ground level, directly connected to the earth and public realm. Above them, the children’s spaces ascend toward the sky, symbolically and physically separating the two worlds.

A monumental concrete platform defines this transition. This structural slab performs multiple roles: it spans large distances required by the sports hall, distributes loads efficiently, and ensures acoustic insulation between the dynamic ground-floor activities and the quieter childcare facilities above. The platform becomes both a structural and conceptual boundary, clearly distinguishing civic and educational zones.

The Crèche as an Urban Fortress and Safe Haven

Above the concrete base rises the crèche, conceived as a large brick-built house organized around an open-air inner courtyard. This courtyard typology introduces natural light, ventilation, and a protected outdoor space at the heart of the childcare facility.

The architectural language evokes the imagery of childhood—reminiscent of sandcastles and protective enclosures. The brick volume appears almost fortress-like within the urban environment, offering children a secure, nurturing environment in the center of the city. This “Cité de l’enfance” creates a micro-world where learning, play, and development unfold within a carefully scaled architectural framework.

Materially, the brick façade reinforces the building’s civic identity while referencing traditional urban construction in Genève. The massing strategy ensures both monumentality and intimacy, balancing institutional presence with domestic warmth.

Structural Innovation and Building Performance

The engineering collaboration—including civil, acoustic, building physics, and environmental specialists—ensures high technical performance aligned with eco-district standards. The concrete platform addresses structural spanning challenges while enhancing sound insulation. Heating, ventilation, and electrical systems are integrated to meet contemporary Swiss sustainability requirements, reinforcing the project’s environmental credentials.

The interplay between heavy structural base and lighter brick upper volume expresses a dialogue between permanence and protection. This layered construction system supports flexibility, durability, and long-term adaptability—key aspects of sustainable public architecture.

Reinforcing Community Through Civic Architecture

Beyond its programmatic efficiency, the Public Facilities Building acts as a social condenser. It brings together children, families, athletes, and local residents, reinforcing community identity within the Jonction district.

Its large urban frontage and carefully articulated public square transform it into more than an educational facility—it becomes a civic landmark. By combining educational architecture, sports infrastructure, and community space within a coherent architectural language, Lacroix Chessex delivers a project that exemplifies contemporary European public building design.

The project demonstrates how compact massing, clear spatial hierarchy, sustainable engineering, and contextual urban integration can converge to create meaningful civic architecture in dense urban environments.

All photographs are works of  Olivier di Giambattista