In Norse mythology, Valhalla is the majestic hall where slain warriors, known as Einherjar, reside after death. It is ruled by the god Odin, who welcomes the bravest of the fallen to prepare for the final battle, Ragnarök. Valhalla symbolizes the ultimate warrior's afterlife, emphasizing honor, bravery, and the preparation for glory in the afterlife. This sacred realm reflects the values of Norse culture, where valor in life directly impacts one's eternal fate.