In situ collage method for participatory urbanism

Unlimited Cities is the free, open-source tool built around the In-Situ Collage method that helps territories engage their civil society to accelerate inclusive transitions. Co-developed by the Open Urbanism Foundation and partner cities, and rooted in European research, the tool combines a structured process with a digital platform deployed directly in public space.

Designed to be facilitated by mediators and straightforward to use, the tool reaches audiences that conventional participation mechanisms typically fail to engage. Depending on the process and time invested, annotated collages produced by up to 1,400 participants make visible the ideas and preferences of citizens for improving their territory

The effective use of these quantitative and qualitative contributions within transition projects, together with the transparent sharing of raw data and structured analyses, strengthens trust between citizens, users, elected officials, and experts.

This accessibility and transparency have led the tool to be recognised by UN-Habitat and awarded several international prizes. To date, Unlimited Cities has been deployed operationally across more than 30 territories in Europe, Asia, South America, and Africa.