Celtic Paganism refers to the spiritual beliefs and practices of the ancient Celtic peoples, primarily in regions like Ireland, Scotland, Wales, and Brittany. This belief system is characterized by a deep connection to nature, reverence for the land, and the worship of various deities associated with natural elements, such as trees, rivers, and animals. Rituals often included seasonal festivals, such as Samhain and Beltane, which marked important agricultural and solar cycles. The Celts also believed in the existence of a spirit world and the importance of ancestors, leading to practices that honored the dead and sought guidance from spiritual beings.