Shinto ("the way of the gods") is the indigenous faith of the Japanese people and as old as Japan herself. It remains Japan's major religion besides Buddhism. "Shinto gods" are called kami. They are sacred spirits which take the form of things and concepts important to life, such as wind, rain, mountains, trees, rivers and fertility. Humans become kami after they die and are revered by their families as ancestral kami. The kami of extraordinary people are even enshrined at some shrines. The Sun Goddess Amaterasu is considered Shinto's most important kami.