Piri Reis Map, 1513 A.D. The Antarctic coastline is perfectly detailed. The most puzzling however is not so much how Piri Reis managed to draw such an accurate map of the Antarctic region 300 years before it was discovered, but that the map shows the coastline under the ice.
Ottoman Map of Malta, by Piri Reis. The Piri Reis map is a world map compiled in 1513 by the Ottoman admiral and cartographer Piri Reis. It used ten Arab sources, four Indian maps sourced from the Portuguese, and one (lost) map of Columbus. (Naval Museum, Istanbul).
Venice, as rendered by Ottoman admiral and cartographer Piri Reis in his Kitab-i Bahriye ("Book of the Sea"), a book of portolan charts and sailing directions produced in the early 16th century. Staatsbibliothek zu Berlin, Bildarchiv Preussischer, Kulturbesitz