What is Asgard

Asgard:

In Norse mythology, Asgard (Old Norse: Ásgarðr; meaning "Enclosure of the Æsir") is the country or capital city of the Æsir surrounded by an incomplete wall attributed to a Hrimthurs riding the stallion Svadilfari, according to Gylfaginning. Valhalla is located within Asgard.

The Æsir:

In Old Norse, áss (or ǫ́ss, ás, plural æsir, feminine ásynja, feminine plural ásynjur) is the term denoting one of the principal gods of the pantheon of Norse Paganism. They include many of the major figures, such as Odin, Frigg, Thor, Balder, Freya and Tyr. They are one of the two groups of gods, the other being the Vanir. In Norse mythology, the two are described as having waged war against one another in the Æsir-Vanir War‎, resulting in the unification of the two into a single tribe of gods.

(Don´t worry, I won´t change your titles to "áss" :D)