The study traces the creation, design, and technical construction of the famous cathedral pavement at Siena, providing a clear account of its iconography, individual panels, and the succession of artisan-designers who planned and executed the work. It combines historical records, documentary transcriptions, and close visual descriptions to relate panel subjects—biblical episodes, allegories, and civic emblems—with workshop practice, materials, and restoration episodes. Short biographical notices knit together known names and documentary evidence, while analytical chapters treat pavement schemes, other related pavement projects, and materials and workmanship. Numerous illustrations and a bibliography of consulted authorities support the narrative and help reconstruct the sequence of contributions by successive masters.