Celtic Christianity refers to the early form of Christianity that developed in the Celtic regions of Britain and Ireland during the 5th to 12th centuries. It is characterized by its unique practices, emphasis on nature, and a strong connection to local culture. Celtic Christians often celebrated the beauty of creation and integrated it into their spiritual life, distinguishing their beliefs from those of the Roman Church. This tradition is known for its monastic communities, such as those founded by St. Patrick and St. Columba, which played a crucial role in spreading Christianity throughout Europe. Celtic Christianity also featured distinctive art, including illuminated manuscripts like the Book of Kells, showcasing intricate designs and biblical themes.