From time to time, I like to pull up this map; the Carta Marina from 1539. It's the first map of the Nordic countries to give details and place names. I particularly like it for including Finmarchia/Lappia (home of the Lapps a.k.a. the Finns a.k.a. the Sami people); a region I'm intimately familiar with because I grew up there. Even today, the area is remote and sparsely populated, so it's incredible that the mapmaker knew enough about it to even map it.