According to Asgardian legend, in the beginning there was nothing, but in time two worlds came into being on opposite sides of the void. The one to the north was named
Niflheim, a world of clouds and shadows in whose center surged the fountain
Hvergelmir, from which flowed twelve rivers of ice. The one to the south was named
Muspelheim, which teemed with rivers of fire. Eventually the warm air from the south carved out the ice giant
Ymir from the ice in the north. Ymir became the father of all the giants, and his cow
Auðumbla licked out of the ice the first Asgardian, Buri. Buri had a son named Borr, who married the giantess Bestla. Borr and Bestla had three sons named
Odin, Vili, and Ve, who were known as the
Æsir. Odin and his brothers grew to hate the giants and slew Ymir, and his blood formed a great sea. Odin and his brothers then raised Ymir's body from the sea and created
Midgard between Niflheim and Muspelheim. With Ymir's bones they created mountains, and with his hair they created trees. They then raised Ymir's skull upon four pillars to create the heavens. Within the skull contained sparks from Muspelheim, which became the sun, moon, and stars. When Midgard was complete, Odin and his brothers created a home for themselves above it called Asgard. Between the two worlds they stretched a rainbow bridge and called it
Bifröst. Once a year Odin must undertake the Odinsleep to regain his strength. During this time Asgard is vulnerable to attack from its many enemies, most notably Odin's adopted son,
Loki. Loki first takes command of Asgard during the Odinsleep, using his right as the 'son' of Odin before Thor could claim it, but fled when Asgard was invaded by
Mangog as he realized that this new foe was too powerful. Loki later usurped the throne of Asgard by taking the Odinring, but fled again when Asgard was invaded by the fire demon,
Surtur. The throne of Asgard later passes to
Thor after Odin is killed in battle by Surtur, when the demon invades Earth. It was prophesied that Loki would lead Asgard's enemies in a final conflict known as
Ragnarök, which would lead to its destruction. This comes to pass when Loki obtains the forge that created
Mjolnir and creates new uru hammers for his army. The entirety of Asgard and its inhabitants are destroyed in the resulting battle. After Ragnarök, Donald Blake awakens Thor from the "Void of Non-Existence". Thor returns to Earth and rebuilds Asgard outside of
Broxton, Oklahoma, purchasing the land with gold from the treasury. Thor then goes about restoring the Asgardians, who have been reborn in the bodies of mortal men and women. Asgard's location on Earth makes the city a target during the "
Secret Invasion" by the
Skrulls led by a
Super-Skrull named Godkiller, whose powers mimic
Thundra,
Titania,
Volcana and
Battleaxe. The aliens are repelled with help from Thor's ally,
Beta Ray Bill. When Thor is forced to abdicate the throne and is exiled for killing his grandfather
Bor, who was brought from the past and driven mad by Loki, control of Asgard passes to Thor's half-brother,
Balder. Asgard is destroyed yet again after
Norman Osborn seizes control of
S.H.I.E.L.D. following the Secret Invasion as he seeks to expel Asgard from
U.S. soil in an effort to consolidate power. Osborn leads the
Dark Avengers in the
Siege of Asgard. The invading forces are defeated with help from the reunited
Avengers, although Asgard itself is toppled by the
Sentry. Immediately following the Siege, Thor reerects
Heimdall's observatory atop
Stark Tower as sign of solidarity with Midgard and appreciation for the Avengers' aid. Thor restores Odin to the throne when the nine realms are invaded by "the World Eaters". However, after Thor and Odin's long-forgotten brother
Cul, kill each other in battle during the "
Fear Itself" event, Odin passes control of Asgard to the
Vanir, headed by the "All-Mother", a
triumvirate of female deities consisting of
Freyja, Gaea and Idunn.
Tony Stark's company, Stark Resilient then rebuilds Asgard over Broxton, Oklahoma, where it is rechristened as "
Asgardia". During the "
Original Sin" storyline, it is revealed that there is a Tenth Realm in Asgard called Heven that is inhabited by
Angels. It was cut off from the rest of the realms following the Angels' attack on Asgard which led to the apparent death of an infant
Angela. Asgard later established the Congress of Worlds which consists of the representatives of the Nine Realms. After Heven was reintegrated with the other Realms, representatives of Heven started appearing as members of the Congress of Worlds. ==Regions==