Signis Watch is the largest of Bastion Ferox's three inner towers. Bastion Ferox is one of the three castles of the Hellknight Order of the Nail's Citadel Vraid. Signis Watch stands in the southeastern corner of the Bastion Ferox. The upper portion of the tower is fortified with siege weapons that point in every direction, while the lower levels hold 50 cells, filled with prisoners of war. The prisoners are usually tortured or starved to death if they are not dragged to the Hellfast for use in the Order of the Nail's devil summoning rituals.