At Metaformic ltd, environmental ambition begins with measurement. Throughout our work, from urban masterplans to individual buildings, we use data to compare scenarios, test consequences, and reveal opportunities that would otherwise remain invisible. Rotterdam ROCKS! continues this approach. Water retention, passive cooling, biodiversity, energy, material use, maintenance, and long-term adaptability are assessed as interconnected systems rather than separate ambitions. The building becomes a measurable ecosystem, with design decisions continuously tested against their environmental effects.