Asgard

Asgard, in Norse mythology, is one of the nine worlds and the homeland of the Aesir, the race of warrior gods. Located on the highest level of the Norse universe, it is surrounded by a high wall of closely fitted stone blocks.
The walls surrounding Asgard were built by a jotun (giant) disguised as a human stonemason. The stonemason appeared in Asgard and asked for the hand of Freya in marriage plus the sun and the moon as payment for building the wall. Odin agreed on the price, providing the walls be complete in six months. The disguised giant had a magic horse, named Svadilfari, who helped him in his work. To Odin's (and the other gods, especially Freya's) horror, with but a few days left, the stonemason was almost finished. Loki, the trickster, turned himself into a mare and beguiled the stallion Svadilfari away from the job site. The job was not completed in time and no payment was given.

In the middle of Asgard lies the plain of Idavoll where the Aesir meet to decide important issues. There the gods assemble in the hall of Gladsheim and the goddesses in the hall of Vingolf. The gods also meet daily at the Well of Urd, beneath the Asgard root of the world tree Yggdrasil.