Planetary Citadel

A Planetary Citadel was a massive, castle-like structure with a large city located in the center. The Terran Federation had originally developed these citadels to decrease the environmental contamination on a colony. The colony of Haven was chosen to experiment with the citadels. However, the citadels eventually degenerated into crime ridden, overcrowded getto's. The project was eventually abandoned and the citadels were dismantled.