Celtic Religion refers to the spiritual beliefs and practices of the ancient Celtic peoples, primarily in regions like Ireland, Scotland, Wales, and Gaul. It was polytheistic, meaning the Celts worshipped multiple gods and goddesses, each associated with various aspects of life, nature, and the cosmos. Important deities included Cernunnos, the god of fertility and animals, and Brigid, the goddess of healing and poetry. Rituals often took place in natural settings, such as groves, rivers, and mountains, reflecting the Celts' deep connection to nature. They practiced various ceremonies, including offerings and festivals, to honor their deities and mark seasonal changes. Sacred sites, like Stonehenge and Newgrange, also played a significant role in their religious practices.