Mount Asgard

In Norse religion, Asgard (Old Norse: Ásgarðr; "Enclosure of the Æsir) is one of the Nine Worlds and home to the gods of the Æsir. It is surrounded by an incomplete wall attributed to a Hrimthurs riding the stallion Svaðilfari, according to Gylfaginning. Odin and his wife, Frigg, are the rulers of Asgard.

One of Asgard's well known locations is Valhalla, in which Odin rules.

For more information see Asgard on Wikipedia