Archeological discoveries in the urban area indicate the presence of a settlement as far back as seven thousand years ago, and during the Middle Ages the site of modern city was marked by several lakeside villages. Within the city limits, the district of Solomennoje appears in surviving records dating back to the sixteenth century, and a map produced by the Flemish cartographer Abraham Ortelius at the end of that century places a settlement here called Onegaborg on the site of modern Petrozavodsk.