How did Vitruvius influence Andrea Palladio’s designs?

The ancient Roman architect and theorist Vitruvius was a foundational influence on Andrea Palladio, who regarded him as his "master and guide". This influence manifested in several key ways throughout Palladio’s career:1

• Conceptual Foundation: Palladio’s early exposure to Vitruvian principles occurred under the mentorship of Gian Giorgio Trissino, whose own villa at Cricoli was designed as an interpretation of Vitruvius’s theories.1
• Villa Design: Palladio sought to recreate the ancient Roman villa by interpreting the Latin descriptions found in the writings of both Pliny and Vitruvius. He adopted the classical temple front for his villa facades, reasoning that because ancient temples like the Pantheon featured pedimented porticoes, domestic architecture—which he believed preceded temples—would have utilized similar forms.2
• Scholarly Collaboration: In 1556, Palladio collaborated with the classical scholar Daniele Barbaro to reconstruct Roman buildings for the plates of a new edition of Vitruvius’s influential treatise, De architectura (On Architecture).2
• Theoretical Legacy: Palladio’s own seminal work, I quattro libri dell’architettura, served as a summary of his studies of classical architecture, further codifying the principles he derived from his deep engagement with Vitruvian thought.2