Feb 10, 2023 · Overview. According to Norse cosmology, the known universe was composed of Nine Realms. These realms were Asgard, the near-perfect home of the Aesir deities; Jotunheim, the fallen world of the monstrous jötunn; Midgard, the land of humans; Alfheim, home of the elves; Hel, a resting place for the dead; Vanaheim, the world of the magical Vanir deities; Nidavellir, …