In ancient times, Ephesus was known as one of the oldest and largest centers of worship of the Mother Goddess.

An excerpt from the article 30 facts about Epheseus

In the beliefs of many cultures, the Mother Goddess was the main deity in the pantheon. She was most often identified with the Earth (or her patron), and in many cultures, she was also the queen of heaven. She was the giver of all life, personified fertility and motherhood, and was often considered the mother of the gods.