Charles Fort is a classic example of a late 17th century star-shaped fort. William Robinson, architect of the Royal Hospital in Kilmainham, Dublin, and Superintendent of Fortifications, is credited with designing the fort. As one of the largest military installations in the country, Charles Fort has been associated with some of the most momentous events in Irish history. The most significant of these are the Williamite War 1689-91 and the Civil War 1922-23. The intervention by Lissadell called for the insertion of several sock anchors into the inside face of an earth and stonework structure supporting the Cockpit Bastion. Also required were inspections of joints, raking out joints and repointing and installation of wall ties.