The main and most important gods were the Twelve Olympians. The home of these gods is at the top of Mount Olympus. There was some variation as to which deities were included in the Twelve. As such, the list below numbers fourteen. It includes all those who are commonly named as one of the Twelve in art and poetry. Dionysus was a later addition; in some descriptions, he replaced Hestia. Hades is not usually included among the Olympians, because his home was the underworld. Some writers, however, such as Plato, named him as one of the Twelve.