Martina will showcase how spatial data visualization can transform LiDAR scans of Vidigal, a favela in Rio de Janeiro, into compelling narratives that bridge science, policy, and community. Presented as an ongoing exhibition at the Venice Architecture Biennale 2025, Data Clouds highlights the role of visualization in revealing hidden urban patterns—morphology, accessibility, and environmental flows—while engaging audiences beyond the scientific community. This case demonstrates how data viz can make complex urban datasets actionable, relatable, and globally scalable.