The design was rather different to von Haschenperg's first castle. The keep and the stirrup towers were raised in height, the level of the floors elevated, the curtain wall was strengthened, the old bastions entirely removed and four new, larger bastions added in their place, while the older foreworks around the castle were demolished. The keep's flat roof was altered to a pitched design, and the guns that it had supported moved into the outlying bastions. Although the size of the castle had slightly decreased, the new design had much more domestic space available for the garrison.