10. Ordo Templi Orientis

What Is It:
If you like the Freemasons and the Illuminati but want a secret society with more permissive views on sex, the Ordo Templi Orientis might be for you. Co-founder Theodor Reuss was both a Mason and a member of the Illuminati when he created OTO in 1906, but the society was largely shaped by Aleister Crowley, who molded OTO around his sexually free religious beliefs.

Famous Members:

Aleister Crowley
Theodor Reuss
Why You Should Join: Crowley practiced “sex magick” and added lots of spicy sex rituals to the OTO hierarchy. If that sounds appealing, OTO might be for you.