This lecture explores the life, education, and architectural vision of Antonio Sant'Elia, highlighting how his experiences and intellectual influences shaped the development of Futurist architecture. It examines the impact of figures such as Otto Wagner, the role of speculative drawing in communicating architectural ideas, and Sant'Elia's enduring influence on later movements including Metabolism, Archigram, and High-Tech architecture. The lecture concludes by reflecting on his brief life, lasting legacy, and the significance of visionary architecture that remained largely unbuilt.