Ahmed Muhiddin Piri, more famous as Piri Reis, was a senior naval officer of the Ottoman Empire. He was also a geographer and cartographer. The present world knows him mainly for his charts and maps that find place in his masterpiece ‘Kitab-ı Bahriye’ (Book of Navigation). It comprise of comprehensive data on navigation as also precise charts of those times elucidating major cities and ports of the Mediterranean Sea. He compiled his first world map in 1513, around one-third of which survives. It was unearthed from Istanbul’s Topkapi Palace in 1929, which earned him worldwide fame as cartographer. The survived portion shows different Atlantic islands, the coast of Brazil and western coasts of Europe and North Africa. So far, it is known to be the oldest Turkish atlas of the New World and is counted among the oldest ones of America that still exists. His second world map, compiled in 1528, only a small portion of which could be retrieved, displays sections of Central America, North America and Greenland. He was beheaded in 1553 for not supporting the Ottoman Vali of Basra, Kubad Pasha, in one of the latter’s campaigns.