It is the capitol of the nation of Arathor, the first major human kingdom. After the Third War it fell to ruin and was invaded by boulderfist ogres and the Syndicate. Also its the home of Danath Trollbane, he has a statue in the valley of kings I believe, if thats what its called. I haven't played WoW in like 3 months so I forget what the bridge in the front of Stormwind is called.