Complex sentence: In 1306, with the permission of the English King Edward I, Cardinal de la Mothe, nephew of Pope Clement V built a second fortress ("le Château Neuf"), square in plan with six towers and a central keep.
Split into simpler sentences: In 1306, with the permission of the English King Edward I, Cardinal de la Mothe, nephew of Pope Clement V built a second fortress ("le Château Neuf"). This new castle was square in plan with six towers and a central keep.