Twilight of the Gods
Asgard is the realm of the gods. In the hall of Valhalla, Odin and Frigg rule the Aesir as well as at least three Vanir hostages. With them are the hallowed, courageous dead, taken up by the Valkyries – enough of them that 800 will march out of each of Valhalla’s 540 doors on the day of the last battle of Ragnarok.
Asgard is a radiant energy demi-plane connected to the Prime Material by the Bifrost Bridge.