Map of Finland and neighbouring regions, 1626

Shown is the Grand Duchy of Finland as it was depicted on a map by Andreas Bureus in 1626. Bureus was a Swedish mathematician, astronomer and cartographer, who was given the task of mapping Lapland (1611) and the whole of Northern Europe (1626) by the Swedish kings. The surveying technique prevailing at that time rendered it possible to determine the latitude of any geographical location but not the longitude. For this reason, the proportions with regard to latitudes are virtually correct, whereas major mistakes are to be found with regard to longitudes. The copy visible here is a reprint by J.J. Blaeu in his Atlas maior, sive Cosmographia Blaviana (Amsterdam, 1662), later coloured by hand.

"A.E. Nordenskiöld Collection", no. 24 II:8, National Library of Finland (Helsinki).