Who inhabits our public buildings, and what roles do we play within them? What if we are both creators and occupants, shaping these spaces as we go? This book stems from Unknown Grounds: The Public Building, a two-day symposium where artists and thinkers reimagined "the public building" through performance and fiction. Participants embodied roles from architects to janitors, exploring how we actively shape the spaces we inhabit. Script for a Synthetic Play: The Public Building features texts by Hamja Ahsan, Lila Athanasiadou, Nina Glockner, and others. It includes a fictionalised wrap-up in the style of Greek comedy, fostering critical reflection on political systems. Both archive and invitation, the book encourages readers to rethink and reshape the public realm.