What is "vanaheimr"

In Norse mythology, Vanaheimr ( Old Norse for "home of the Vanir") is one of the Nine Worlds and home of the Vanir, a group of gods associated with fertility, wisdom, and the ability to see the future. Vanaheimr is attested in the Poetic Edda; compiled in the 13th century from earlier traditional sources, and the Prose Edda and (in euhemerized form) Heimskringla; both written in the 13th century by Snorri Sturluson. In the Poetic Edda and the Prose Edda, Vanaheimr is described as the location where the Van god Njörðr was raised. In Norse cosmology, Vanaheimr is considered one of the Nine Worlds.