Pier Luigi Nervi (1891–1979) was an Italian architect and structural engineer celebrated for his pioneering use of reinforced concrete. His innovative work combined engineering precision with artistic expression, leading to iconic projects such as the Palazzetto dello Sport in Rome, the Cathedral of St. Mary of the Assumption in San Francisco, and the UNESCO Headquarters in Paris. Nervi’s designs showcased elegant, geometric forms and structural efficiency, influencing the development of modern stadiums, bridges, and civic buildings. His contributions to concrete technology and construction methods remain fundamental in 20th-century architecture and structural engineering.