Interactive public artwork Generative visual system

Ondulations Luxembourg

Ville de Luxembourg wanted to enliven a facade under renovation on Place de Paris, turning pedestrian movement into fluid waves of light across the glass. Commissioned by TIJO Studio, Refractiv conceived the artwork and developed its visual and interactive system.

Project Details

Year:2025
Duration:Approximately six weeks
Public client:Ville de Luxembourg
Commissioner:TIJO Studio
Location:Place de Paris, Luxembourg
Spatial context:Glass facade during building renovation
Media layer:Generative waves of light across the facade
Input:Pedestrian movement captured through a discreet sensing layer
Refractiv role:Artwork concept, generative visual design, interactive-system design, on-site supervision and remote troubleshooting

Brief and site condition

In the heart of Luxembourg, a building on Place de Paris was undergoing renovation. The city commissioned an artwork to activate the street during the works and invite people to engage with the site as part of their daily movement.

Refractiv developed the artwork and its interactive media system, working alongside TIJO Studio and Brain & More. The installation transformed the movement of passers-by into fluid waves of light across the glass facade, turning everyday pedestrian flow into a living layer of the building. People influenced the composition simply by walking past: their presence shaped subtle changes in rhythm, density and movement, without asking for direct interaction.

Generative waves and presence

Motion, light and architecture came together as one continuous material. The installation translated everyday movement into a field of generative waves, evolving gradually as small changes accumulated over time. Brief pauses left gentle traces before dissolving back into the whole.

The visual system was shaped around the depth and geometry of the glass facade, giving the building a second, living state while preserving its architectural presence. The completed composition was presented over approximately six weeks, with Refractiv supervising the installation on site and providing remote troubleshooting during the public presentation. Brain & More managed project commissioning and coordination within the wider public programme, and Pro Musik handled the technical installation and site works.