The Four Pillars are the four great gestas that make up the shared cosmos.
| Type | Cosmic structure |
| Shared sphere | Antiterra |
| Spanish entry | Los Cuatro Pilares |
The pillars
- The Deep Ones.
- The Regulators / La Jabalina — appearing to help against “infernal legions”.
- The Company of Ardis Vala.
- Uchronic Paris (current).
Additional gestas
- The Supreme Ones — cosmic conflict between the Unnameable and Arian, which breaks the realities of universes and ends in a strange New York.
- The Northern Crown — seventeenth century, colonies in eastern North America, conflicts with native inhabitants.
Continuity
Characters may connect across pillars; a period of twelve years separates them in time; Antiterra is the shared sphere. The Regulators are a major power in several pillars. Fictional chronology differs from the order of the gestas: Templars came after Les Libertateurs but is set in the twelfth century, while Les Libertateurs is set in the eighteenth.