Andrea Palladio's I quattro libri dell'architettura was published in 1570 and has since been translated into several Western languages. Known in English as Four Books on Architecture, the work summarized Palladio's studies of classical Roman architecture.  The books contained nine sets of architectural rules as well as many of Palladio's designs which he synthesized from his study of Roman ruins, works of previous writers such as Vitruvius, and discussions with other Renaissance architects.  Some of his designs featured in the treatises were actually constructed while others were merely theorized. His work sparked the architectural movement of Palladian architecture that is based on symmetry, perspective, and other mathematical principles.

Sources:

Center for Palladian Studies in America. “Palladio and His Books.” Center for Palladian Studies in America, www.palladiancenter.org/palladiobooks.html.

Heyman, Jacques. “Palladio's Wooden Bridges.” Architectural Research Quarterly, vol. 4, no. 1, 2000, pp. 81–86.

Image Source:

By Anonymous (Unknown) [Public domain], via Wikimedia Commons