The Codex Borgia is an ancient Mesoamerican manuscript created by the Aztecs in the 15th century. It is a richly illustrated document that serves as a religious and divinatory guide, detailing rituals, gods, and the calendar system. The codex is named after the Borgia family, who owned it in the 19th century. This manuscript is considered one of the most important surviving examples of Aztec art and culture. It contains intricate drawings and symbols that represent various deities, ceremonies, and cosmological beliefs, providing valuable insights into the spiritual life of the Aztec civilization.