Asgard The realm of the Aesir gods.
Odin presides over Asgard, the topmost level of the Nine Worlds. Here the gods and goddesses had their palaces and mansions, called halls.
Asgard was surrounded and protected by a mighty wall constructed by the Giant Master Builder.
In the center of Asgard was the green field Idavoll, around which stood the 13 halls of the gods. Among them were: Gladsheim, the main hall of the gods; Bilskirnir, the hall of Thor; Fensalir, which belonged to Frigg; Breidablik, where Balder and his wife, Nanna, lived; Himinbjorg, the abode of Heimdall; Glitnir, where Forseti presided; Sessrumnir, Freyaís hall; and Valhalla, where Odin entertained the slain heroes of the world.
BiFrost, the Rainbow Bridge, connected Asgard to Midgard (Middle Earth). At Ragnarok, the end of the world, all the beautiful mansions would be destroyed, but the golden playthings of the godsóchess piecesówould remain, and a new world would arise.