In Norse mythology, Vanaheim is the home of the Vanir, a group of fertility gods and goddesses. The Vanir are often contrasted with the Aesir, another group of gods who are associated with war and death. Vanaheim is described as a peaceful and fertile land, where the Vanir live in harmony with nature. Unlike the realm of the Aesir, which is known as Asgard, Vanaheim is not described as being protected by walls or fortifications. Instead, the Vanir are said to rely on their wisdom and magic to defend themselves and maintain the peace in their land.