This practice-based research project examines the participatory potential of digital 3D objects in urban space and tests their role as intangible, interactive artefacts that are capable of reconfiguring urban encounters. Through the process of remediating photographic archive material of contested artefacts (colonial monuments) into a digital 3D form, the project creates and visualises transitory states of removed monuments to explore modalities for embodied, spatial and participatory experiences in urban space utilising augmented reality (AR). The research builds upon methods from the artist’s personal practice, and employs an artefact-led practice-based process and an ethnographic approach, including participant observation, interviews, and ‘mattering’ interventions to evaluate reflective engagement. The final iteration of the practical component of the project was showcased at the Irish Museum of Modern Art (IMMA), between the 16th and 30th of June, 2023, and addressed both the past (colonial) and present (decolonial) contexts to give participants an opportunity to express their views towards the changing role of monuments. It aimed to connect individuals through shared urban histories and enable reflection on the role of digitally augmented experiences of urban space and their future potential as shared cultural environments. Through the collection of qualitative data from participant interaction with the digital 3D objects, the research analyses the ways in which the objects reconfigure the spatial and social dynamics of the urban environment in which they are situated. Through the qualitative evaluation with participants, the research demonstrates how a practice-based participatory project can generate awareness and desire for interactive encounters with obscured histories in public space. It also reveals how digital 3D objects can facilitate critical reflection on contested historical narratives and enable participants to contribute to discourses on the implementation of experimental digital technologies towards creating participatory, innovative, reflective and critically engaging public art experiences in urban space.