Piri Reis was a famous Turkish sailor and the first Turkish marine cartographer born in Gelibolu (Gallipoli) in 1465. Piri Reis was both a great sea commander who was heroic and smart in battle and one of the most important cartographers and sailor writers of literature of his time.
Starting with his days of piracy, he systematically wrote down his observations. Works he produced written by using the material he found on marine cartography and marine geography and the maps he produced have a distinguished place in history of science. The world map he charted in 1513 was presented by Piri Reis to Yavuz Sultan Selim in Egypt in 1517. The map is so accurate that even today it's uncertain how one could draw such a detailed and accurate map of the uncharted waters!
The map was drawn on leather in 1513 with realistic additional information on the Atlantic Ocean, Africa and America. "Kitab-i Bahriye" (Book of the Seas, 1521) by Piri Reis includes many maps very similar to modern maps. The original copy of the map today is at Topkapi Palace Museum in Istanbul.