The City of the Pyramids is a central, symbolic location within the mystical system of Aleister Crowley's Thelema, representing the ultimate destination for an adept who successfully completes the Great Work. It is the realm where those who have crossed the Abyss—overcoming the final obstacle, Choronzon, the Dweller in the Abyss—reside after the complete destruction of their earthly ego-identity. This state is achieved through the symbolic act of pouring one's blood into the Graal of Babalon, a process that signifies the adept's total surrender and rebirth. The City is described as a place of profound silence and stillness, where the enlightened individuals, now known as Nemo (Latin for "No-Man" or "No-One"), dwell in motionless majesty, having shed all sense of self.
The City exists under the Night of Pan, a symbolic state representing the time of unification with Nuit through the ecstatic destruction of the ego-self, a period of symbolic death where the practitioner transcends all limitations and experiences oneness with the universe. This state is associated with the sphere of Binah on the Tree of Life, which Crowley linked to the concept of the Great Sea and the mother-goddesses. The City is also identified with the Enochian tablets of Dee and Kelly, with each square on the elemental tablets symbolizing the base of a pyramid, and the name Babalon itself holds Qabalistic significance, with its gematria summing to 156, the number of squares on each tablet. The City is thus a profound mystery, a state of being where the adept, having become a "Babe of the Abyss" impregnated by Pan, rests in the womb of Babalon, awaiting the next stage of spiritual evolution.