Caeran Castle is a tower which would serve as both a family home and as a fortress. The square portion of the castle would contain the great hall and the living quarters for the lord, his family, and their servants. The round tower would serve as a keep, and contain storerooms and quarters for the soldiers.

The castle can only be entered through a small, easily defended door at the base of the tower. The many windows and terraces at the top make living more comfortable for the inhabitants, but don't weaken the defenses of the castle because they are so high off the ground.

The base of Caeran Castle is 20 x 20 inches (64 x 64 studs) and the castle stands 32 inches high.