The Priory of Sion is a secret society that was founded in 1956 in France by Pierre Plantard. It is a spiritual organisation that claims to be descended from the Knights Templar and dedicated to the preservation of the sacred mysteries of Christianity. It is also believed to have been the source of the Da Vinci Code.

The Illuminati is a secret society that is believed to have originated in Germany in the 1700s. It was founded by Adam Weishaupt, a professor of religious law, and was meant to be a secular alternative to the Catholic Church. Its purpose was to promote the Age of Enlightenment and to work towards the advancement of humanity. The society has been linked to numerous conspiracy theories, such as the New World Order.

Although it is unknown whether or not the Illuminati still exists, some people suggest that its influence can still be seen in modern society.