If you wish to study the specific diagrams, sigils, and detailed descriptions of each portal, you will need the primary source texts. You can find the specific framework in:
Each entry includes the portal’s astrological degree, the ruling star system, and a specific guided meditation script. 27 celestial portals pdf
The Holy City is the perfected "body" or expression of the Infinite. It represents a state of being where the finite form and the Infinite source are one. The 27 Portals are the "gates" or access points of this city. Unlike the 7 chakras of the human body, which govern survival and psychology, the 27 Portals govern the through the individual. If you wish to study the specific diagrams,