The pineal gland, located near the center of the brain, has fascinated people for centuries due to its pinecone shape and possible connection to the concept of a "third eye." Depictions of pinecones and sacred eyes have been found in ancient cultures around the world, including Assyria, Egypt, Mexico, Greece and Rome. The pinecone symbolism has been linked to ideas of eternal life, fertility, and spiritual enlightenment. Researchers have theorized that the pinecone may represent the pineal gland and its possible role in activating psychic abilities or spiritual awakening.