Alfheim ("elf home"), in Norse mythology, is one of the nine worlds and also one of the twelve realms. It is located on the highest level of the Norse universe. Also found on this level are the worlds of Asgard and Vanaheim. Alfheim is the palace of the god Freyr and the homeland of the elves of light. Neither the elves of light nor the elves of darkness, who live in Svartalfhaeim, participate in any of the events described in Norse myths. Elves do, however, have active roles in the literature of quite a few of the other branches of Indo-European mythology.