This document discusses Andrea Palladio's influential architectural works and designs. It focuses on Palladio's 1570 publication "The Four Books on Architecture" and some of his most famous villas including Villa Barbaro built in 1555-1559 and Villa Rotonda built from 1566-1570. Villa Rotonda is described through images and diagrams of its design elements like proportions, plans, sections, interiors and surrounding gardens.