The Fourth Wall and the reinvention of public space in Laval

Installed at Place Claude Léveillée in Laval’s Montmorency district, The Fourth Wall transforms an ordinary public square into a stage where everyday life becomes a form of performance. Conceived by NÓS Architects, the installation is part of Métamorphoses créatives, a long term urban initiative launched by the City of Laval to embed art, architecture, and design into the transformation of the city’s downtown.

Borrowing its name from theatre, where the “fourth wall” separates actors from the audience, the project reimagines this invisible boundary as something porous, curved, and deliberately ambiguous. Rather than dividing space, the installation invites curiosity. It encourages passersby to cross thresholds, shift perspectives, and become both spectators and participants in a shared urban scene.

Set within Place Claude-Léveillée, the installation establishes a strong visual presence while remaining open and adaptable. Steel masts support curved rails from which translucent orange vinyl strips are suspended, forming a monumental yet permeable curtain. Familiar from industrial and commercial contexts, these flexible strips take on a new role in the public realm, filtering light, sound, and movement while responding to the site’s proximity to future construction zones.

As people move through and around the structure, the curtain reflects silhouettes and gestures, producing constantly shifting visual effects. The square becomes animated by chance encounters, informal performances, and moments of pause, turning daily routines into collective experience.

The Fourth Wall is designed as a modular system with interchangeable components, allowing it to evolve alongside the neighborhood. Its structure can be reconfigured, adapted to new uses, or relocated for future installations, positioning the project as both a temporary artwork and a sustainable urban tool.

This flexibility aligns with the ambitions of Métamorphoses créatives, which seeks to activate transitional spaces and accompany long term urban renewal through design driven interventions.

Within the installation, simple urban furniture introduces warmth and tactility. Raw wooden beams, painted bright orange at their base, double as seating elements. The color echoes the visual identity of Métamorphoses créatives and reinforces the connection between culture, landscape, and transformation. These elements encourage lingering, conversation, and informal gatherings, grounding the installation in everyday use rather than spectacle alone.

More than a static object, The Fourth Wall operates as an evolving framework for interaction. It hosts public performances, filters movement through the square, and continuously reshapes how the space is perceived and inhabited. Over its expected lifespan of four to six years, the installation will accompany the renewal of downtown Laval, offering a vibrant and inclusive public space open to interpretation.

Here, architecture does not dictate behavior. Instead, it sets the stage. In doing so, The Fourth Wall quietly dissolves the line between art and life, inviting the city itself to perform.

Project Credit

Location: Place Claude-Léveillée, Université de Montréal campus in Laval, Canada
Design firm: NÓS Architectes / @nos_architecture
Photographer: Raphaël Thibodeau / @raphael_thibodeau