What is Odin's hall for fallen warriors?

The story behind the answer

Valhalla is Odin’s grand hall where warriors who die bravely in battle—the Einherjar—are brought by the Valkyries. There they feast and train each day, preparing to fight alongside the gods at Ragnarök. It’s a hall within Asgard, not a realm of its own, and symbolizes honor, courage, and eternal readiness.

By contrast, Asgard is the realm of the Aesir gods, Helheim is the underworld for those who die of illness or old age, and Niflheim is a primordial world of ice and mist. Memory tip: “Val-halla = hall of the valiant.”