"Two Sides of Tomorrow" is a speculative exploration into sustainable spatial practices, born from an Aalto University course focused on a critical question: how do we shape our world without new construction? The project confronts the severe environmental impacts of the construction industry by imagining a future of limited resources. Using transformative futures methods like Causal Layered Analysis (CLA), my team and I deconstructed the paradigms that drive current construction practices. Our work centered on a real-world case study: Maarintalo, a vacant postmodern building on the Aalto campus. We developed a project brief for a fictional "spatial practitioner," proposing a conceptual intervention for the site. The project culminated in a final exhibition of our proposed future, designed and installed within the vacant spaces of Maarintalo itself.