The installation takes the form of a polygonal fort, irregular hexagonal in plan, with two caponniers defending the forward ditches. Access to the fort is via a gatehous and causway across the rear ditch. The battery takes its name from the much earlier Wignacourt tower, the Santa Maria delle Grazie Tower that stood close to the present battery. The original tower was demolished to clear the field of fire of the present battery. The battery is now in the care of Xghajra council and is being restored to form the focal point for a public space, Battery Park.