Darnassus

From WoW: IncGamers World of Warcraft Wiki

Darnassus is the home of the Night Elves, and High Priestess Tyrande. It is a city on top of the great tree Teldrassil. Teldrassil was planted using the magical waters of the Well of Eternity in a desperate act to reclaim the Night Elves lost immortality. In the years following the third war, it has become corrupted, as Malfurion predicted.

After the release of the Burning Crusade, there will be a flight path to and from The Exodar and Mages will be able to teleport from Shattrath City once they hit Level 70.