Andrea Palladio (Vicenza, 1508 - Venice, 1580) was an Italian architect. Two of his most famous works are Villa Capra and the Basilica, in Vicenza, Italy. He was later architectural adviser to the Venetian Republic.
In Venice in 1570, he published in four volumes his masterwork: I Quattro Libri dell' Architettura, or The Four Books of Architecture. 
Palladio created around Venice villas for the Venetian nobility. "The Palladian Villas of the Veneto" is a World Heritage Site since 1994.
The English style of the seventeenth century is now known as "Palladian". Naturally, the Georgian architecture of the United States develops directly from Palladio through the later masters who followed Inigo Jones. Palladio's writings, particularly "Le Antichità di Roma" and the "Quattro Libri dell' Architettura", did more than anything else to spread his influence over Europe. 
Villa Rotonda (Villa Capra), (1566).