The Piri Reis Map: What a 1513 Fragment Really Shows — and What It Doesn't

2026-06-03 · Impossible Objects · 8 min read

The winter light in Istanbul is thin and grey, and in the year 1929 it fell on crate after crate of manuscripts stacked in the vaulted rooms of Topkapi Palace, where the Ottoman sultans had ruled for close to four centuries. The sultanate had just been abolished; the palace was being turned into a museum of the young republic. Halil Edhem Eldem, director of the national museums, had invited a German theologian named Gustav Adolf Deissmann to help survey the library, and Deissmann in turn had persuaded the Rockefeller Foundation to fund the preservation of its oldest manuscripts. Somewhere in that dim archive his hand closed on a piece of gazelle skin, torn raggedly down one edge, painted with coastlines and little ships and the spoked wheels of compass roses. He could not read the Ottoman Turkish crowded into its margins. He could see that it was very old, that it was a map, and that the writing kept returning to a name that did not belong in a Turkish palace at all: Colombo.

What Deissmann had found was the surviving third of a world map drawn in 1513 by Piri Reis, an Ottoman admiral who had learned the sea as a young corsair under his uncle Kemal Reis and who would later compile the Kitab-i Bahriye, one of the great navigational manuals of the age. The fragment measures roughly ninety by sixty-three centimetres. Across it run about a hundred and seventeen place names and some thirty inscriptions, all but one written in the Turkish of Piri Reis's day. It is one of the earliest surviving maps to show any part of the Americas, and for a document that spent four hundred years folded away in a palace it is astonishingly alive, dense with parrots and mountains and the small careful handwriting of a man explaining himself.

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