The Nine Worlds

Asgard, world of the Æsir.
Vanaheimr, world of the Vanir.
Midgard, world of humans.
Muspellheim, world of the primordial element of fire.
Niflheim, world of the primordial element of ice
Svartálfaheim, world of the Svartálfar (black elves).
Álfheimr, world of the Álfar (elves).
Hel, underground world of the dead.
Jötunheimr, world of the jötnar.