Vistvænir
Vistvænir, also known as the "Hall of the Visions," is a concept from Norse mythology, specifically mentioned in the Poetic Edda, a collection of Old Norse poems. It is one of the nine realms or worlds that make up the cosmos in Norse mythology. Vistvænir is described as a vast hall filled with visions and dreams, where the gods and goddesses can experience and share their visions. The hall is said to be located in the sky, and it is connected to the realm of Muspelheim, the land of fire, by a bridge made of the bones of the dead. The inhabitants of Vistvænir are the gods and goddesses, who can enter the hall to receive and share their visions. The hall is also associated with the god Odin, who is said to have visited Vistvænir to gain knowledge and wisdom. The exact nature and purpose of Vistvænir are not fully explained in the sources, but it is clear that it plays a significant role in the cosmology of Norse mythology.