In this architectural and environmental design challenge, students explore the world of green roofing—an innovative building solution that improves energy efficiency, air quality, and urban biodiversity. They begin by researching the benefits of green roofs, such as natural insulation, rainwater management, and reduced urban heat. Next, students study each required layer in detail, from root barriers and waterproof membranes to drainage, soil, and vegetation. Using ProjoTech’s special kit (LeafTop), students construct a 1-square-meter prototype with transparent side walls, allowing full visibility into the structure’s inner layers. They must ensure proper sequencing and function of each component for realistic modeling. To complete the project, students analyze green roofs’ cost-effectiveness, maintenance needs, and long-term impact on buildings and the environment. This project blends civil engineering, environmental science, and sustainability education, giving students hands-on experience with one of the key elements of future-friendly architecture.