This is a map showing the administration centers of the fictional (or alternative historical) state United Kingdom of Scandinavia.
As one might imagine, this all began with the Kalmar Union in 1397 but did not end in the 16th century, but continued until this day, in a similar manner as in Britain and Iberia. I haven't figured out the detailed story, but as you can see, the shift has been towards Sweden during the centuries with focus on eastern expansion and loss of Slesvik. The Scandinavians have been successful in a series of wars with Russia, the last territorial acquisitions east of Finland probably being after the collapse of the Russian Empire in 1917 (which did not turn Soviet). Don't quite know what happened with the Germans in WWI, apparently, they kept their lands but I would think they lost the war in which Scandinavia was on the Entente side (thus intervening in the Russian Civil War).
The speaker of the Scandinavian languages might be disturbed by the use of language here. This is my experimental creation of a what I thought would be a standard bokmål for the Scandinavian tongue, developed over the ages. As one can see, here, the balance of cultural power has been a bit towards the Swedes too. I am not a native speaker of these languages, so if you have suggestions please help me tweak it, I think its an interesting concept.
English translation for the on-map text:
"The Scandinavian Kindgom without overseas territories (Svalbard, Jan Mayen and presumably some tropical islands somewhere)
Statsgrense: Borders between states
Landsdelsgrense: Borders between landsdeler, an administrative division which may be translated as region.
Riksvegnettverket: The national road network. I suppose sub-networks are administered at the region level.
Landsdelshuvedort: Regional capital.
By med... etc.: City with over 100k and 50k inhabitants.
Islendska Fristaten: The Icelandic Free State
Den Finsk-Karelska Autnomonregionen: The Finnish-Karelian Autonomous Region.