In Norse mythology, spears serve as the rafters of Valhalla. The image comes from the architectural description of Odin’s hall in Grímnismál, one of the poems of the Poetic Edda.
The poem depicts Valhalla as a vast warrior hall whose construction is inseparable from battle equipment. Its roof is formed by shields, while spear shafts function as rafters. The building therefore resembles a symbolic monument to the martial culture associated with Odin and the einherjar.
This detail is easy to mix up with the hall’s shield roof or its armor-covered benches. All three belong to the same poetic description, but they identify different parts of the building. Norse sources do not treat Valhalla as a realistic architectural blueprint; the imagery is deliberately heroic and supernatural.