The entire region is enclosed by the Ahnenburg Wall, a robust rampart that dates back to possibly earlier than the Hundred Days War. During the war, Erebonian forces laid siege to the capital city but are unable to break through. The defenses helped keep the region under Liberlian control for the remainder of the war. Gurune Gate lies in the northern half of the wall while Sanktheim Gate is located at the southern half. These two gates are the only way in and out of Grancel on land.