Recorded in the 15th century, The Interior Castle is still one of the most well-known accounts of mystical theology today. St. Teresa, a mystic and nun who regularly communed with God, recorded a particular vision involving a crystal globe and seven mansions, each representative of a different level of the human soul. Her journey has been interpreted as one of faith, self-knowledge, and fulfillment, and remains a sacred text offering a unique glimpse into the Divine and invites a deeper relationship with the Christian God.