After 500 Years, Archaeologists Unearthed the Only Building Designed by Vitruvius (Fano 2026)
Around $25\text{–}15\text{ BCE}$, the Roman architect and military engineer Marcus Vitruvius Pollio dedicated his ten-volume masterpiece De Architectura to Emperor Augustus—a treatise on symmetry, proportion (firmitas, utilitas, venustas), and human geometry that later inspired Leonardo da Vinci's iconic Vitruvian Man. Yet across all ten books, Vitruvius named only a single building that he personally designed and supervised: the civic Basilica at Fanum Fortunae (modern Fano on Italy's Adriatic coast).
In Book V, Chapter 1, Vitruvius recorded its exact blueprint: a $120\text{-by-}60\text{-Roman-foot}$ double colonnade supported by $18$ monumental columns standing $50\text{ Roman feet}$ ($14.8\text{ meters}$) tall and $5\text{ feet}$ thick, flanking a semicircular Pronaos shrine to Augustus. In January 2026, rescue excavations beneath Piazza Andrea Costa in Fano finally uncovered the monumental column foundations, travertine pilasters, and marble revetments matching Vitruvius's exact ratios down to the centimeter.