The fascinating story of the Venetian who helped to map the World during the Renaissance, by the author of A Venetian Affairand Autumn in Venice. During the Age of Discovery a little-known public servant in the Venetian government, Giovambattista Ramusio, anonymously assembled and edited three volumes - over two million words - that revealed our world as never before. It was, to use a current expression, the biggest Wikileak of the Renaissance.