This project presents a sustainable design for the new “Amerigo Vespucci” Nautical Institute in Gallipoli, merging evolving educational needs with green building criteria. The layout unfolds on three distinct levels as a monolithic block in local stone, meticulously sculpted by terraces and defined access routes that guide user circulation. Its dynamic external envelope, with flares of varying inclinations, masterfully channels light and frames the maritime context. Interior spaces, with modular partitioning, are designed to remain functionally autonomous while fostering community engagement. The design’s material and environmental nuances, as subtly revealed by the visual presentation, further emphasize its integration within the urban landscape.