Haafingar is one of the nine Holds of Skyrim. The seat of power is Solitude and the Empire's stronghold.
Solitude, the seat of High King of Skyrim and the capital of Haafingar hold, has always welcomed the Empire with open arms. Much commerce flows along the rivers here, and you will find the folk of this hold to be among the most hospitable in Skyrim.
As you venture forth in your campaigns, be sure to maintain a secure supply line back to Solitude. The Empire maintains ample provisions in Castle Dour, from which General Tullius commands all the legions stationed in Skyrim.