Golf Vinoř Citizen Science Project is an example of prefigurative politics in action, demonstrating how citizen science can contribute to pre-sent socio-ecological transformations. Situated on the contested edge of Prague, the project emerged during a period when an abandoned golf course evolved into a biodiverse “new wilderness”. Through participatory mapping, biodiversity monitoring, and multi-stakeholder workshops, the project enabled residents, scientists, and local authorities to co-produce knowledge and negotiate future land uses. Challenging the dominant single-use recreational model, the project prefigured an alternative governance framework—grounded in inclusivity, ecological sensitivity, and democratic engagement. It highlighted how landscape management can be informed by the experiences and ecological awareness of local communities, rather than imposed from above. Despite structural limitations, including fragmented governance and the temporal withdrawal of the golf course operator, the project reshaped public perception and demonstrated the capacity of grassroots initiatives to model systemic change. By analysing this case, the paper contributes to emerging discussions on the role of citizen science-based experimentation in transformation research, offering practical and theoretical insights into how prefigurative politics can unfold within contested semi-urban landscapes.