The largest of the Biospheres, it is the central hub of Aensetr Derrum, economically and politically, as well as geographically. All other spheres rotate and are connected to the Citadel, making it the crossroads of the city. Inside this massive artificial dome are the main workings and controls of the city, everything from the artificial environment regulation to the city computer database. Here is where a majority of the citizen’s work, and therefore the most protected. The Administrator’s office is located here, along with the other governments sections, Vyres Hive, Shipyard, anything and everything regarding the regulation of a massive artificial landmass. The Central Hubs for both the Chute Regulation System and the Intra-Magnus portal platform are also located here.