The first scientific world map was made in 1527 by Diogo Ribeiro, a Portuguese cartographer working for Spain, and called the Padrón Real. The map is heavily influenced by information obtained during the Magellan-Elcano circumnavigation of the globe. Diogo's map accurately delineates the Central and South American coasts. The map shows, for the first time, the real extension of the Pacific Ocean and the North American coast as a continuous coastline (probably influenced by Esteban Gómez's 1525 exploration). It also shows the demarcation of the Treaty of Tordesillas.