Dibella's Watch adds an entire new continent to Oblivion. It comes complete with a major city, castles, towns, villages, farms, monasteries and all the good stuff that makes up a Medieval landscape. There's also fighting to be had and quests to be made!
Birkfjord is the Viking Trading Post in Dibella's Watch. The Vikings feel right at home in the cold north of the island with its frequent snowfall and fjords surrounded by protective mountains.