Kingdom of the Isles survives well into the present as a federation of five regions, commonly known as Eyar. Its not a major power, so kudos to Doctor President for not turning this into a wank. I do like, however, the idea of an Old Norse civilization surviving in the North Atlantic.
Plus there are little touches that speak of a larger world such as the nation of "Enrica" on continental North America. The map itself is minimalist, but still well done. You can see a full version in case you need a closer look at the place names. For a relatively new member to AlternateHistory.com, this is a fine start.
Honorable mention goes out to "The Austro-Hungarian Empire and its neighbours in 1806" by Ankh Von Hapsburg. For more mappy goodness, see Vintage News' profile on the mysterious phantom island of Irish mythology: Hy-Brasil.
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Matt Mitrovich is the founder and editor of Alternate History Weekly Update, a blogger for Amazing Stories, a volunteer interviewer for SFFWorld and a Sidewise Awards for Alternate History judge. When not exploring alternate timelines he enjoys life with his beautiful wife Alana and prepares for the day when travel between parallel universes becomes a reality. You can follow him on Facebook, Twitter, Tumblr and YouTube. Learn how you can support his alternate history projects on Patreon.