Answer: Norway
Sure enough, heading through Strange's portal, Thor and Loki find Odin waiting on the edge of a cliff. Clearly aged, Odin says that he has been waiting for them, but there's not much time. He doesn't have long, he claims, as Ragnarok is yet to occur and will happen upon his imminent death. The goddess of death, Hela, who was his firstborn daughter, was locked away many years ago, and when he dies, she will be freed. Her strength, pulled from Asgard, will make her too powerful to defeat and, unfortunately, Thor and Loki will need to face her alone. And with that, Odin vanishes into the ether while his sons look on.
Almost immediately, the sky darkens and a dark portal appears on the horizon. From this, Hela emerges and introduces herself to the duo, urging them to kneel before their queen. Thor throws Mjolnir at her, but she grabs the hammer from the air and uses her strength to shatter it before their very eyes. Loki calls upon the Bifrost to bring them back, but this allows Hela to shoot through to Asgard, and on the way she throws Loki and Thor out into space, scattering them separately across the realm.