▁house ▁incorpor ated ▁re - used ▁media eval ▁material ▁from ▁the ▁dissol ved ▁Ab bey ▁of ▁Ma en an . ▁The ▁square ▁tur ret ▁at ▁the ▁rear ▁of ▁the ▁Sol ar ▁Tower ▁contains ▁a ▁spir al ▁st air case ▁taken ▁from ▁the ▁Ab bey ▁and ▁many ▁elabor ately ▁car ved ▁stones ▁can ▁also ▁be ▁seen . ▁The ▁tur ret ▁was ▁added ▁around ▁ 1 5 4 0 ▁and ▁Sir ▁John ▁W yn n ' s ▁initial s ▁can ▁be ▁seen ▁above ▁the ▁main ▁entrance ▁in ▁the ▁cour ty ard ▁gate house ▁along ▁with ▁the ▁date ▁of ▁ 1 5 5 5 . ▁The ▁surv iving ▁buildings ▁date ▁from ▁around ▁the ▁year ▁ 1 5 0 0 , ▁and ▁there ▁were ▁alter ations ▁and ▁add itions ▁in ▁c 1 5 4 0 , ▁c 1 6 0 0 ▁and ▁c 1 8 2 8 , ▁the ▁latter ▁after ▁Lord ▁Will ough by ▁had ▁done ▁a ▁fair ▁bit ▁of ▁demol ishing ▁in ▁c 1 8 1 9 . ▁ ▁Although ▁called ▁a ▁castle , ▁it ▁is ▁an ▁example ▁of ▁a ▁T ud or ▁architecture ▁cour ty ard ▁house ▁or ▁fort ified ▁man or ▁house , ▁rather ▁than ▁a ▁traditional ▁castle , ▁such ▁as ▁those ▁built ▁in ▁North ▁Wales ▁by ▁L ly w ely n ▁the ▁Great ▁and ▁Edward ▁I . ▁ ▁G w yd ir ▁was ▁home ▁to ▁Kath ery n ▁of ▁Ber ain . ▁King ▁Charles ▁is ▁said ▁to ▁have ▁visited ▁G w yd ir ▁in ▁ 1 6 4 5 ▁as ▁the ▁guest