Note 248 — Chapter IX · CASTLES OF THE THIRTEENTH CENTURY: THE FORTIFICATION OF THE CURTAIN

This applies, of course, to almost all vaulted towers which are cylindrical in plan, and not to gatehouse towers alone: e.g., the towers of the inner ward of Coucy. But, even where there is no vaulting, the interior plan of cylindrical towers is sometimes polygonal—e.g., in the western angle-towers at Harlech, on all floors as well as in the basement. In the eastern angle-towers of the same castle, the interior of the basements is cylindrical. Clark, ii. 73, describes these angle-towers inaccurately.