Seserex Fortress protects The Duchy of Parzelon from the elves in The Eroan Wilds. Although the elves have not been hostile for decades, the fortress is armed in preparation for the day Elves attempt to cross the Gessna Bridge.

The fortress was erected during The Race Wars as a fortification against the city of Gannelore. Although Seserex Fortress never saw battle during the wars, it was essential in restricting troop movements south towards Thonham.

Today, the fort is heavily manned by The Duchy of Parzelon.