Palladio's influence was far-reaching, although his buildings are all in a relatively small part of Italy. One factor in the spread of his influence was the publication in 1570 of his architectural treatise I Quattro Libri dell'Architettura (The Four Books of Architecture), which set out rules others could follow. Before this landmark publication, architectural drawings by Palladio had appeared in print as illustrations to Daniele Barbaro's "Commentary" on Vitruvius.
Interest in his style was renewed in later generations and became fashionable all over Europe, for example in parts of the Loire Valley of France. In Britain, Inigo Jones and Christopher Wren embraced the Palladian style. In his Italian Journey, Johann von Goethe describes Palladio as a genius, commending his unfinished Convent of S. Maria della Carita as the most perfect existing work of architecture. Another admirer was the architect Richard Boyle, 4th Earl of Cork, also known as Lord Burlington, who, with William Kent, designed Chiswick House. The influence of Palladio even got to America. The Capitol building is an example of slightly evolved version of Palladio's works. Thomas Jefferson loved that style of architecture. Exponents of Palladianism include the 18th century Venetian architect Giacomo Leoni who published an authoritative four-volume work on Palladio and his architectural concepts.
Over 330 of Palladio's original drawings and sketches still survive in the collections of the Royal Institute of British Architects, most of which were originally owned by Inigo Jones. Jones collected a significant number of these on his Grand Tour of 1613-1614, while some were a gift from Henry Wotton.