In recent years, there has been an increasing focus on Universal Design (UD) – design that aims to make the world more accessible to all people, regardless of ability. Through the research project ‘Shared Spaces – Life Between the Buildings from a Universal Design Perspective’, we explored how UD can be conceived and designed through a postphenomenological lens. The aim was to examine how the creation of inclusive stabilities and increasing the multistability of design can influence the way we experience ourselves, each other, and the world around us. In the project, 17 participants with varying abilities participated in Universal Design walks and interviews to identify the barriers they encounter in a public housing area in Denmark. Based on their perspectives, ten temporary urban experiments were developed and tested to address the needs identified by the participants. Three of these experiments are presented in this article. Through these experiments, the mediating effects of design are examined – not only what inclusive design is, but what it does. The article concludes with a proposal for five design criteria that can be integrated into how we conceive and design UD to create better conditions for inclusion in public space through increased multistability.