Nirvana is not a place but a state of bliss to which Buddhists aspire.
In Sanskrit it means the “going out” of a light.
Early Buddhists used the word to describe the extinction of the fires of cravings.
Valhalla, in Norse mythology, is the heavenly hall of slain heroes.
It also represents a state of bliss, but one in which the dead feast and fight each other for sport.