Siegen Prime

Background
Siegen Prime is a case of a stagnant Feudal World in the period between the second half of the sixteenth century and the first of the seventeenth. Siegen's moon is made up of several fiefdoms that all render a tributary vassalage to the Conquistadors and receive a tithe either in minerals (everything extracted in the mines, is sent to the headquarters of the Conquistadors), food, servants even defenders. The conflicts usually do not exceed ten years and are supervised by the Conquistadors to avoid excess in them (brutality against the civilian population in excess, heretic cults even possible anti-imperial thoughts). There have been cases where some kingdom found on the moon decides to take hostile actions, if necessary, the Conquistadors do not shake their hands to report that that kingdom is a rebel thing that does not take long to be crushed by the joint strength of the other kingdoms and the brutal and majestic appearance of the Conquistadors.

Fortress-Monastery
The Ciudadela de Hierro is the main bastion of the Conquistadors and the most magnificent structure of all Siegen Prime and serves as a Fortress-Monastery. This marvel of engineering was designed and built during the time of the Columbia Prime Sector Crusade. Since then, the warriors of the Space Marines Conquistadors Chapter had lived there. The fortress is based on the Isla de Hierro, an island found on the shores of the city of Jerez, a city that thanks to the relationship with the Conquistadors has been influenced in technology, culture and popularity. The island was approximately one kilometer from the coast, its walls rise to 45.8 m (150 feet) above the sea.

This formidable appointment of the also powerful powerful void shields, encasing the entire Island in its protective barrier and able to sustain a prolonged orbital bombardment from the most powerful void ships, as well as a deadly array of hidden gun emplacements and landing platforms. The citadel stands out because it has a large number of buildings on its surface, from recruitment academies where those who wish to enter the Conquistadors, enter the Chapter, training complexes, barracks of the chapter serf and other personnel. In the lower levels of the island, there are the hangars, Librarius, Armory and Reclusiarchy.