Many generations ago, Martense Hall was donated to the city. Since the war, it has served as a bomb shelter, HQ, and med station. Today, it is the lynch pin holding the defensive lines together. Martense Hall stands 5-1/2 inches tall. Each of the long sides is 8 inches and the L cutaway is 4 inches deep. The ruin shows extensive damage with a large hole in one side and only the edges of the second floor and roof remaining.