What is the secret meaning of a Gothic Cathedral? Looking at this architectural style can be awe-inspiring and even psychedelic, but how do these buildings elicit such profound effects? The art of Gothic Cathedrals was largely developed by believers in Esoteric Christianity, Catholicism, Freemasonry, and Alchemy, and one can uncover their hidden messages using the principles of geometry, Theology, and Jungian Psychoanalysis.