ast ing ▁colours ▁of ▁the ▁natural ▁surr ound ings ▁exempl ifies ▁the ▁Griff ins ' ▁objective ▁which ▁did ▁not ▁involve ▁establish ing ▁impos ing ▁and ▁artificial ▁built ▁structures , ▁but ▁rather ▁to ▁have ▁the ▁buildings ▁bl end ▁in ▁with ▁the ▁environment ; ▁retain ing ▁the ▁bush ▁setting . ▁ ▁Thus , ▁the ▁Griff ins ' ▁designs ▁were ▁remark ably ▁different ▁from ▁the ▁uniform ▁designs ▁at ▁the ▁time ▁- ▁houses ▁with ▁red , ▁pitch ed ▁roof s ▁- ▁which ▁Griff in ▁det ested . ▁ ▁There ▁has ▁since ▁been ▁development ▁in ▁Castle c rag ▁that ▁has ▁not ▁respect ed ▁the ▁Griff in ▁ide als . ▁ ▁However , ▁the ▁Will ough by ▁City ▁Council ▁is ▁aware ▁of ▁the ▁importance ▁of ▁Castle c rag ▁and ▁has ▁im posed ▁controls ▁over ▁development ▁in ▁the ▁area . ▁ ▁The ▁purpose ▁of ▁the ▁controls ▁is ▁to ▁preserve ▁the ▁character ▁of ▁Castle c rag , ▁encourag ing ▁the ▁construction ▁of ▁buildings , ▁which ▁respect ▁the ▁original ▁houses ▁designed ▁by ▁Griff in ▁and ▁Mah ony ▁Griff in , ▁and ▁the ▁natural ▁landscape . ▁ ▁Heritage ▁list ings ▁ ▁Castle c rag ▁has ▁a ▁number ▁of ▁her itage - list ed ▁sites , ▁including : ▁▁ 3 7 5 ▁Edinburgh ▁Road : ▁Bu hr ich ▁House ▁II ▁▁ 8 ▁The ▁Barb ette : ▁Dun can ▁House ▁( Cast le c rag ) ▁▁ 8 0 ▁The ▁Bul w ark : ▁The ▁G lass ▁House ▁( Cast le c rag ) ▁▁ 1 5 ▁The ▁Cit adel : ▁Fish wick ▁House ▁